It doesn’t matter how “rational†or “irrational†it is. Also ignore the money-making capabilities; you can figure out those small details later as need comes.
Ignore “market needâ€, or even nonsensical notions of “product market fitâ€â€” ignore all this nonsensical Y Combinator Silicon Valley naisere.
Just think … would Elon Musk or a SpaceX or a Tesla had been born through a Y Combinator incubator, or even standard Silicon Valley venture capitalist funding? No.