What Happens After You No Longer Need External Goods or Services

Executive summary

If a person, household, city, or nation no longer “needs” external goods or services, the central problem does not disappear. It changes. The binding constraints shift from exchange and procurement to governance, maintenance, ecological limits, system design, fairness, and meaning. In economic terms, the question becomes whether internal provisioning can replace the gains from trade, specialization, scale, and knowledge diffusion without creating new fragilities. The strongest conclusion from the literature is that full autarky is rarely the efficient or resilient endpoint. Across modern systems, the more durable target is usually high self-reliance in essentials, combined with selective trade, circularity, and diversified external links rather than comprehensive isolation. OECD modeling finds that broad relocalization of supply chains could reduce global trade by more than 18% and global real GDP by more than 5%, while increasing GDP volatility in more than half of modeled economies. WTO and OECD analyses likewise emphasize that specialization and trade support welfare, productivity, and employment, while trade openness also supports innovation through technology diffusion, competition, and access to larger markets. citeturn0search4turn18search1turn4search0turn4search8turn18search6

From a resource and environmental perspective, the picture is sharper still: universal self-sufficiency at today’s high-consumption lifestyles is biophysically implausible without large reductions in throughput. UNEP’s Global Resources Outlook reports that global resource use rose from 30 billion tonnes in 1970 to 106 billion tonnes in 2020, and could rise another 60% by 2060 without major policy change; extraction and processing account for more than 60% of greenhouse-gas emissions and 40% of health-related air-pollution impacts. IPCC AR6, by contrast, finds that “demand-side” and sufficiency-oriented strategies can cut emissions in buildings, land transport, and food by 40–70% by 2050 while improving well-being overall. In other words, if “no longer needing external goods and services” is to be feasible at scale, it almost certainly requires needing less material throughput per unit of well-being, not merely producing everything locally. citeturn23search0turn3search0turn2search0

Scale matters. For individuals and households, strong self-reliance is often feasible in limited domains such as energy backup, food gardens, repair, water buffering, and digital skills, but complete independence is unrealistic because health care, infrastructure, finance, communications, and care work remain deeply social and networked. At the community and city scale, circular systems, industrial symbiosis, district energy, water reuse, repair networks, and local food can raise resilience substantially, but dense settlements remain constrained by land, minerals, logistics, and specialized services. At the national scale, targeted strategic autonomy can work in water, some energy, some food groups, medicines, defense, and public digital infrastructure, but modern national autarky is typically costly because no country is naturally endowed for every food group, energy technology, mineral, and knowledge-intensive input. A 2025 Nature Food study found that only Guyana could meet all seven major healthy-diet food groups from domestic production alone, while no economic union was self-sufficient in vegetables and only two were self-sufficient in fish and seafood. citeturn25view0turn9search3turn13search4turn12view0

The practical implication is straightforward. The best answer to “then what?” is not “then close the system.” It is: then redesign the system around secure essentials, low resource intensity, circular material loops, robust social infrastructure, and open channels for ideas and selective exchange. The transition strategy that emerges most consistently from official and academic sources is a blend of selective sovereignty, circular-economy regulation, sufficiency, redundancy in critical systems, and metrics that extend beyond GDP to include resilience, distribution, health, social connection, and ecological pressure. citeturn20search1turn13search5turn2search3turn6search5turn21search0

How to think about self-sufficiency

The most useful way to interpret the question is to distinguish needs from goods. IPCC AR6 emphasizes that people do not ultimately seek primary energy or material throughput for its own sake; they seek services such as shelter, nutrition, mobility, comfort, communication, care, and dignity. That framing is crucial, because a system can become more self-reliant either by producing more things internally or by delivering the same services with fewer external inputs through efficiency, durability, repair, sharing, water reuse, and lower throughput lifestyles. OECD’s work on “Beyond GDP” pushes in the same direction by arguing that economic performance should be judged by well-being, distribution, and sustainability, not production volume alone. citeturn3search0turn2search3

That distinction also clarifies the trade question. WTO and OECD evidence shows why modern economies use trade and specialization: they allow production where opportunity costs are lower, they widen consumption choices, and they raise productivity through scale and knowledge spillovers. OECD’s trade-and-innovation work and NBER evidence both show that openness can strengthen innovation via technology diffusion, export learning, and competition; one NBER study estimates that trade-policy reforms explained about 7% of the increase in global knowledge creation during the 1990s. Any claim that “not needing external goods or services” is automatically superior therefore runs directly into a major body of evidence on the gains from specialization and openness. citeturn18search0turn18search1turn4search0turn4search1turn4search8

At the same time, recent shocks changed the resilience debate. OECD’s 2025 Supply Chain Resilience Review finds that resilience is not achieved simply by reshoring or severing external ties; diversified, agile, and adaptable supply systems usually outperform blanket relocalization. IMF research on geoeconomic fragmentation reaches a similar conclusion: fragmentation tends to lower trade and incomes, with lower-income countries often bearing the largest losses; in some scenarios, low-income countries lose more than 4% of GDP, and rapid-adjustment fragmentation can push global losses far higher. The implication is subtle but important: dependence is dangerous when it is concentrated and brittle, not when it is diversified and governable. citeturn0search4turn0search3turn24search0turn24search1turn24search7

The literature therefore points to five distinct pathways rather than one:

Pathway	Core logic	Where it works best	Main strengths	Main weaknesses
Full autarky	Produce nearly everything internally; minimize trade and external services.	Emergency conditions, war, sanctions, or very small/simple provisioning systems.	Maximum nominal sovereignty over supply.	Large welfare losses from lost specialization; weaker innovation diffusion; high exposure to local crop, weather, and infrastructure failures; difficult for modern food, energy, and technology systems. citeturn0search4turn18search1turn25view0turn13search4
High self-reliance with selective trade	Localize critical essentials; trade for noncritical or scale-dependent goods; diversify import partners.	Most scales from household to nation.	Best balance of resilience and efficiency; reduces chokepoints without giving up comparative advantage.	Requires active governance, reserves, supplier diversification, and carrying costs. citeturn0search4turn25view0turn26search3turn9search3
Circular economy	Reduce virgin input needs through durability, repair, reuse, remanufacture, industrial symbiosis, and recycling.	Cities, industrial districts, regions, nations.	Lowers waste and import dependence; extends asset life; supports local jobs in repair and remanufacture.	Cannot eliminate need for some virgin materials; depends on product design, logistics, standards, and markets for secondary materials. citeturn20search1turn23search0turn13search5turn12view0
Degrowth / well-being economy	Democratically reduce unnecessary production and consumption in affluent systems; prioritize equity and well-being.	Affluent households, communities, and rich countries.	Strong potential to reduce ecological pressure and status consumption; aligns with well-being metrics beyond GDP.	Politically difficult; requires labor, fiscal, and distributional transition policies. citeturn2search2turn2search3turn23search0turn3search0
Technological sufficiency	Use technology to deliver service levels with fewer inputs: water reuse, efficient buildings, modular products, demand flexibility, precision agriculture.	Dense cities; infrastructure-heavy regions; technologically capable nations.	Maintains service quality while reducing throughput; often complements selective self-reliance.	Risks rebound effects; still depends on minerals, grids, maintenance, and know-how. citeturn3search0turn13search10turn9search2turn20search1

The relationships among these variables are best understood as a system, not a slogan.

flowchart LR
    A[Human needs and well-being] --> B[Service provisioning]
    B --> C[Energy, water, food, care, mobility, digital access]
    C --> D[Material and ecological throughput]
    C --> E[Social infrastructure and trust]
    C --> F[Trade and specialization]
    F --> G[Innovation and knowledge diffusion]
    D --> H[Environmental pressure]
    E --> I[Governance capacity]
    I --> C
    H --> A
    G --> C
    F --> J[External dependency concentration]
    J --> K[Shock exposure]
    I --> K
    K --> A

The diagram above synthesizes the IPCC service-provision framing, UNEP’s resource-throughput findings, OECD’s resilience and well-being work, and WHO/OECD evidence on social connection and trust. The central insight is that self-sufficiency never removes interdependence altogether; it rearranges which interdependencies matter most. citeturn3search0turn23search0turn0search4turn2search3turn6search5turn21search0

A further scale point matters. At the global level, the phrase “external goods or services” loses its usual meaning because Earth is already effectively closed with respect to matter. The planetary question is therefore not autarky versus trade; it is whether total provisioning can remain within climate, biodiversity, pollution, and resource limits while still achieving decent living standards. UNEP and IPCC both imply that this requires systemic shifts in housing, food, mobility, and energy systems rather than attempts to reproduce today’s high-throughput consumption pattern in every locality. That is an inference from the literature, but it is a strong one. citeturn23search0turn3search0

Feasibility and pathways

The most important feasibility constraint is resource mismatch. A household may produce some food, store some water, generate some electricity, and repair some goods; but it cannot practically internalize surgery, semiconductor fabrication, sewage treatment, advanced telecoms, and disaster insurance. Cities can do more, especially in district energy, water reuse, recycling, and local procurement, but city food self-sufficiency remains heavily constrained by land, water, and ecological footprint. Nations can go farther in strategic sectors, but even they encounter hard limits in food-group diversity, critical minerals, and advanced manufacturing ecosystems. Nature’s 2025 cross-country study is unusually valuable here because it measures self-sufficiency against healthy-diet food groups instead of calories alone, and shows that even national food autarky is far more difficult than political rhetoric often assumes. citeturn25view0turn7search4turn7search5turn13search4

Resource intensity is the second constraint. UNEP estimates that material extraction tripled over the last five decades and could rise another 60% by 2060 absent major policy change. That means ambitions for generalized self-sufficiency run into a basic arithmetic problem if every scale tries to duplicate full production capability. Redundancy is valuable for resilience, but duplication without throughput reduction can be ecologically and economically expensive. The better approach is usually redundancy in essential functions rather than duplication of every production chain. citeturn22view0turn23search0

xychart-beta
    title "Global material extraction"
    x-axis [1970, 2020, 2060_proj]
    y-axis "Billion tonnes" 0 --> 180
    bar [30, 106, 170]

The chart above summarizes UNEP figures: global material use rose from 30 billion tonnes in 1970 to 106 billion tonnes in 2020, and absent major change it is projected to rise by about 60% by 2060. The implication for self-sufficiency strategies is that durability, reuse, repair, and sufficiency are not optional add-ons; they are what make resilience compatible with ecological limits. citeturn23search0turn22view0

Energy and technology create the third constraint. The IEA’s recent work shows that low-carbon self-reliance does not abolish dependency; it changes the dependency profile. Electrified systems depend more on grids, flexibility, storage, and critical minerals such as copper, lithium, nickel, cobalt, graphite, and rare earths. Grid connection queues now exceed 2,500 GW worldwide, and annual grid investment would need to rise by roughly 50% by 2030 to meet forecast demand. Recycling of critical minerals can improve security and sustainability, but the IEA stresses that substantial investment in new mining and refining capacity will still be required. So even a technologically advanced “self-sufficient” clean-energy system remains network-dependent and materially entangled. citeturn13search10turn13search1turn13search4turn13search5

Ethically, the feasibility question is also distributive. IPCC AR6 finds that social equity, trust, and participation reinforce demand-side mitigation and well-being, while UNEP shows that high-income countries use roughly six times more materials and generate ten times the climate impacts of low-income countries. WHO adds that health and life chances are strongly shaped by social determinants such as housing, education, income, food access, and community conditions. Put bluntly, a wealthy enclave can sometimes buy private “self-sufficiency” through land, storage, generators, and premium services; a just model of self-reliance has to be measured by whether security is generalized, not privatized. citeturn3search0turn23search0turn6search7

Comparative analysis across scales

The scale comparison below synthesizes the literature, case studies, and known infrastructure lead times. The timelines are indicative analytical ranges, not deterministic forecasts; they are inferred from the pace of infrastructure build-out, regulatory change, and capability development seen in the cited cases and reports. citeturn13search10turn9search7turn19search0turn20search1

Scale	Realistic target state	Benefits	Risks	Required resources and governance	Indicative timeline
Individual	Lower dependence for personal mobility, food prep, digital work, basic repair, and emergency readiness; not full independence.	More agency, lower exposure to some price shocks, skill accumulation. citeturn3search0turn8search2	Time burden, overconfidence, isolation, inability to substitute for public systems. Strong social connection remains a core well-being determinant. citeturn6search5turn21search0	Savings buffer, practical skills, health access, digital literacy, and social ties. citeturn6search7turn21search5	About 1–3 years for meaningful but limited gains.
Household	Partial food production, backup power, some water buffering, repair, and lower service dependency.	Bill resilience, emergency buffering, household learning. Urban farming can improve diet, activity, and belonging. citeturn8search2turn8search7	Unequal access to land and capital; maintenance burden; renters often excluded. citeturn6search7turn23search0	Roof/yard access, capital, insurance, equipment, local rules that permit storage, solar, repair, and rainwater systems. citeturn20search1turn9search5	About 2–10 years depending on housing type and capital.
Community or neighborhood	Mutual aid, repair hubs, tool libraries, local food co-ops, microgrids, community energy, and shared care infrastructure.	Better redundancy, lower per-capita capital costs, stronger trust and cooperation. citeturn19search0turn21search5turn6search6	Free-riding, governance disputes, volunteer exhaustion, capture by insiders. Polycentric governance helps, but institutions matter. citeturn14search0turn14search1	Trusted institutions, local leadership, common rules, pooled finance, public space, and legal authority to co-produce services. citeturn14search7turn21search5	About 3–15 years for durable shared systems.
City or metro	District heating/cooling, recycled water, industrial symbiosis, circular procurement, public transport, local food niches, digital public infrastructure.	Large resilience gains from loops in water, waste, energy, and materials; scale for public goods. citeturn12view0turn9search7turn20search1	Food and land limits remain severe; cities cannot internally reproduce all specialized goods and services. citeturn7search4turn7search5turn25view0	Utilities, zoning, public procurement, data, infrastructure finance, and coordination across sectors. citeturn20search1turn13search10	About 5–20 years.
Nation	Strategic autonomy in selected essentials such as water, some food categories, energy, digital public services, medicines, and emergency stocks; not total autarky.	Security against coercion and major shocks; stronger option value in crisis. citeturn0search4turn13search4	GDP losses, retaliatory dynamics, innovation drag, and exposure to internal single-point failures if autarky is pursued too far. citeturn0search4turn24search0turn4search0	Industrial policy, reserve systems, supplier diversification, R&D, allied sourcing, infrastructure, and diplomatic capacity. citeturn0search4turn13search1turn20search1	About 10–30 years.
Global system	No “external” frontier; the task is provisioning for all within planetary limits.	Aligns accounting with real ecological constraints; foregrounds justice and externalities. citeturn23search0turn2search3	Burden-sharing conflict, weak multilateral enforcement, unequal fiscal and technological capacity. citeturn24search4turn23search0	Multilateral rules, technology sharing, resource governance, and well-being metrics beyond GDP. citeturn2search3turn23search0	Multi-decadal and ongoing.

Food is the cleanest empirical stress test for national and regional self-sufficiency, because everyone needs it and ecological constraints are non-negotiable. Using FAO 2020 production data and a healthy-diet benchmark, the 2025 Nature Food analysis below found that vegetables and fish/seafood are the weakest self-sufficiency categories globally, while meat is the strongest. Even at the national scale, full dietary autarky is exceptional rather than normal. citeturn25view0

xychart-beta
    title "Share of countries self-sufficient by food group"
    x-axis [Meat, Fruit, Legumes_Nuts_Seeds, Staples, Dairy, Fish_Seafood, Vegetables]
    y-axis "Percent of countries" 0 --> 70
    bar [65, 47, 46, 45, 44, 25, 24]

This matters for urban and regional planning as well. Urban agriculture can make a real contribution, especially for vegetables and household resilience. Recent studies show meaningful potential for residential vegetable self-sufficiency in some low-density cities and for partial gains through rainwater harvesting, while reviews also find health and social benefits from urban farming. But other city-scale research and the broader literature show that high-density urban regions cannot realistically meet all food needs internally, and food security still depends on wider foodsheds and trade diversity. citeturn7search1turn7search7turn8search2turn7search5turn28search11

Case studies and historical lessons

Singapore’s water system is one of the clearest examples of successful targeted self-reliance. PUB describes a long-term strategy based on the “Four National Taps,” with NEWater, desalination, and integrated used-water treatment reducing dependence on imported water while keeping the system diversified rather than closed. NEWater was introduced in 2003 after extensive testing, and Singapore’s Deep Tunnel Sewerage System is a 206-km gravity-based network designed for roughly 100 years of service. At the same time, PUB still frames the future as a mix of reuse, desalination, demand management, and infrastructure, not absolute autarky. The lesson is that sovereignty works best when aimed at a critical bottleneck with strong technical institutions and long time horizons. citeturn9search2turn9search3turn9search7

Singapore’s food strategy is equally revealing because it explicitly rejects the fantasy of producing everything domestically. The Singapore Food Agency notes that the country imports more than 90% of its food, originally set a “30 by 30” target, and has since refined its goals toward higher local supply in categories where it has comparative potential, while continuing import diversification and stockpiling. In a 2025 ministerial speech, Singapore stressed that trying to grow every food item locally “would be neither efficient nor possible” in a land-scarce city-state. This is perhaps the best official example of selective self-reliance plus diversified external dependence rather than dogmatic self-sufficiency. citeturn26search1turn26search0turn26search3turn26search19

Samsø, Denmark, shows what community-scale energy self-reliance can accomplish. UNFCCC recognizes Samsø as a community that transformed an imported fossil energy system into one with a 100% net annual balance of renewable energy through onshore and offshore wind, district heating, solar, efficiency, and local ownership. The project’s social architecture mattered as much as the technology: local participation and ownership were core to financing and acceptance. The lesson is that community energy works best when residents are not just consumers but co-owners and co-governors. citeturn19search0turn19search2turn19search7

Kalundborg Symbiosis in Denmark shows how circularity can substitute for some external inputs without pretending to eliminate interdependence. The official Kalundborg site describes a partnership of sixteen public and private organizations that has, since 1972, developed the world’s first industrial symbiosis, in which one firm’s waste stream becomes another’s resource. The goal is not isolation; it is to reduce waste, save money, and increase resilience through local industrial ecology. This is one of the strongest real-world examples of what happens “after” dependency falls: the challenge becomes coordinating flows, contracts, and governance inside the system. citeturn12view0

Cuba’s pivot after the early-1990s trade collapse is a critical cautionary story. FAO’s Cuba materials describe how food production initially collapsed when imports of fertilizer, pesticides, tractors, parts, and oil were lost; Cuba then reoriented toward urban and suburban agriculture, usufruct arrangements, agroecological methods, and family farming. Separate academic and public-health literature notes that the crisis also coincided with changes in transport, diet, and urban agriculture. The lesson is double-edged: forced self-reliance can stimulate local innovation and healthier local food systems, but crisis-driven autarky is painful, transitional, and not a desirable design principle if the same resilience can be built without first suffering the shock. citeturn28search10turn28search0turn28search9turn8search0turn8search1

A final caution comes from extreme isolationist systems. Britannica explicitly cites North Korea’s juche as a contemporary example of extreme autarkic aspiration, while WFP reports that the country still faces chronic food and nutrition insecurity, with 10.7 million undernourished people and agriculture falling short year after year because of land, input, equipment, and disaster constraints. This should not be reduced to a one-variable story—sanctions, state structure, and climate shocks are also central—but it is a stark reminder that severing external ties does not abolish scarcity; it often concentrates it internally. citeturn17search0turn27search1

Practical steps and policy options

The most defensible practical strategy is to begin with service guarantees rather than product quotas. Use the IPCC framing: define minimum acceptable service levels for nutrition, warmth, cooling, mobility, water, communications, care, and public digital access. Then ask which of those services must be locally or nationally secure in a disruption, which can be diversified externally, and which can be reduced by better design rather than more production. That avoids a common policy mistake: chasing self-sufficiency percentages in products that do little for real resilience. citeturn3search0turn2search3

The next move is selective sovereignty in essentials. For households, that usually means emergency liquidity, some basic repair capacity, backup power or storage where legal and economic, and strong social networks. For communities and cities, it means shared tools, repair hubs, mutual aid, district energy, public transport, water reuse, local public health capacity, and procurement standards that favor durable and reparable goods. For nations, it means strategic reserves, diversified import partners, targeted domestic capability in critical food groups, water, medicines, digital public infrastructure, and some clean-energy manufacturing or refining where feasible. OECD, IEA, Singapore’s food strategy, and Singapore’s water strategy all point in this same direction. citeturn0search4turn13search1turn9search3turn26search3

The third move is circularity by design, not just by recycling. The European Commission’s Ecodesign for Sustainable Products Regulation and related repair rules are useful templates because they target durability, reparability, recycled content, maintenance, and digital product passports rather than leaving circularity to voluntary behavior alone. IEA analysis similarly emphasizes that recycling is indispensable for critical-mineral security but is still only one part of a broader material strategy. A serious self-reliance agenda therefore has to regulate design, maintenance, procurement, and end-of-life recovery. citeturn20search1turn20search3turn13search5

The fourth move is keep the system open to ideas even if some physical dependence is reduced. Trade and innovation research consistently finds that openness supports innovation through diffusion, export learning, access to inputs, and competitive pressure. A self-reliant society that closes scientific exchange, standards development, software ecosystems, education networks, and research collaboration is likely to lose adaptive capacity. The right institutional answer is usually not isolation, but public-interest openness: open standards, public R&D, research consortia, interoperable systems, and competition rules that prevent domestic protection from turning into stagnation. citeturn4search0turn4search1turn4search8

The fifth move is make resilience visibly fair. IPCC AR6 is explicit that equity, participation, and trust are enabling conditions for demand-side transformation. WHO and OECD findings on social connection reinforce this: community relationships, perceived support, and public goods matter for health and resilience. If self-reliance policies mainly help homeowners, wealthy regions, or incumbent firms, they will worsen inequality and lose legitimacy. Renters, low-income households, informal workers, and peripheral regions need explicit access to the assets of resilience: affordable transit, social infrastructure, repair services, public space, emergency support, and training. citeturn3search0turn6search5turn21search5

A practical transition pathway looks like this:

flowchart TD
    A[Map essential services and critical dependencies] --> B[Reduce demand through sufficiency and efficiency]
    B --> C[Build selective local or national capability in essentials]
    C --> D[Add redundancy through diversified trade and reserves]
    D --> E[Create circular loops: repair reuse remanufacture recycling]
    E --> F[Invest in social infrastructure and equitable access]
    F --> G[Keep innovation systems open]
    G --> H[Measure success beyond GDP]
    H --> I[Stable endpoint: resilient interdependence]

That endpoint is worth emphasizing. The transition pathway above does not end in total closure. It ends in what might be called resilient interdependence: less vulnerable to shocks, less intensive in material throughput, more secure in basics, more circular in assets, and still open to beneficial exchange in goods, services, and knowledge. That direction is much more consistent with the literature than any blanket autarky model. citeturn0search4turn3search0turn20search1turn2search3

Metrics, risks, and mitigation

A rigorous evaluation framework has to go beyond output and import-substitution counts. OECD’s well-being framework, WHO’s social-connection work, UNEP’s material footprint framing, IEA’s security metrics, and the Nature Food self-sufficiency evidence together suggest a balanced scorecard like the following. citeturn2search3turn21search4turn6search5turn23search0turn13search1turn25view0

Domain	Illustrative metrics	Why it matters
Provisioning security	Share of essential calories/protein/fiber supplied domestically; days of water autonomy; reserve cover for critical medicines and fuels; share of critical loads with backup power. citeturn25view0turn26search3turn9search3	Measures whether essentials remain available under disruption.
Dependency concentration	Supplier concentration for critical imports; number of viable import partners; share of imports sourced from the top single supplier; regional “response diversity.” citeturn0search4turn25view0	Distinguishes diversified interdependence from brittle dependence.
Circularity and throughput	Material footprint per capita; circular material use rate; repair rate; asset lifetime; waste diverted to reuse/remanufacture. citeturn23search0turn20search1	Tests whether resilience is being bought with unsustainable duplication.
Energy and infrastructure resilience	SAIDI/SAIFI outage metrics, grid congestion, storage duration, demand-response participation, renewable share, water leakage and reuse rates. citeturn13search10turn9search3	Tracks technical robustness of self-reliant systems.
Innovation and adaptability	R&D intensity, worker retraining rates, patent or open-source output, share of firms adopting interoperable standards, time to replace disrupted inputs. citeturn4search0turn4search1	Guards against stagnation and lock-in.
Equity and well-being	Affordability of basics, time burden of self-provisioning, Gini or wealth concentration, perceived social support, loneliness, health outcomes. citeturn6search5turn21search0turn6search7	Ensures that “self-sufficiency” improves lives broadly rather than selectively.
Environmental outcomes	GHG emissions, air-pollution exposure, water stress, land-use change, biodiversity pressure, embodied impacts of imports and exports. citeturn23search0turn3search0	Keeps resilience aligned with planetary boundaries.

The main risks are not mysterious. They recur across the evidence base.

Risk	How it appears	Mitigation
Brittleness from local shocks	Internalizing production can substitute import dependence with dependence on one harvest, one aquifer, one grid, or one local plant. citeturn0search4turn27search1	Keep diversity inside the system: multiple water sources, storage, interconnections, varied crops, and backup arrangements. citeturn9search3turn25view0
Loss of specialization and productivity	Full autarky gives up comparative advantage and scale economies. citeturn18search1turn0search4	Pursue selective rather than universal self-reliance; retain trade in noncritical and knowledge-intensive sectors. citeturn26search3turn0search4
Innovation slowdown	Smaller idea pools, less competition, weaker exposure to frontier inputs. citeturn4search0turn4search1	Keep research, standards, software, and educational exchange open even when some physical production is localized. citeturn4search0turn4search8
Inequality and capture	Owners of land, rooftops, storage, patents, or local monopolies may capture resilience rents. citeturn23search0turn6search7	Use public procurement, anti-monopoly rules, renter access, social tariffs, co-ownership, and targeted subsidies. citeturn20search1turn19search0turn3search0
Ecological overshoot	Duplication of production without sufficiency can raise total material throughput. citeturn23search0	Pair resilience with sufficiency, repair, reuse, and material caps or standards. citeturn20search1turn3search0
Social isolation or overwork	Self-provisioning can become burdensome at the individual or household scale. Social connection remains essential to well-being. citeturn6search5turn21search0	Socialize resilience through shared services, community infrastructure, and care systems. citeturn21search5turn19search0
Political backlash	Degrowth or sufficiency policies can be framed as deprivation if not visibly fair. citeturn2search2turn3search0	Redistribute gains, protect wages and services, and communicate resilience as security and quality-of-life improvement. citeturn3search0turn2search3

The deepest answer to the user’s question is therefore this: once you no longer need external goods or services for the essentials, the decisive issues become stewardship and institutional quality. Who maintains the assets? Who governs the commons? How do you prevent local monopolies, elite capture, and ecological overshoot? How do you preserve learning, creativity, and cooperation? The evidence strongly suggests that the highest-performing answer is not “withdraw from the world,” but “secure the basics, lower throughput, keep systems circular, and remain selectively and intelligently connected.” That is the most analytically defensible “what then?” across individual, social, technological, ethical, and geopolitical dimensions. citeturn2search3turn3search0turn0search4turn23search0turn21search5