> the fact that $2.5 trillion of actual investor money chose Google

Of course, a lot of money invested in Google was invested at a much lower price; if everyone sold all at once you'd have a hard time finding 2.5T of new money to buy all those shares. We could argue about if "not selling" is the same as "choosing again at the new price" every day... but... Google's not the interesting case here anyway.

For a young company in a hot industry like OpenAI total market cap is even less relevant since so much of the company simply isn't liquid anyway and the numbers come from far fewer instances of purchases than for an established public one.

Yes, OpenAI's not being publicly traded makes it harder to value it, but the comment to which I replied referenced 3 publicly-traded companies.