If these were all private entities, I think it'd be okay.
But they're public entities and they're using the pittance of investment as a force multiplier on their stock price, which they're then regularly using to raise capital.
A lot of dumb money in retail investors (as well as corporate) are a big reason this valuations bubble is occuring - which is really the elephant in the room. It's not that the tech isn't real. It's that the valuations behind it have already priced in maybe a decade of profit that hasn't come close to materializing for the LLM vendors; although, the shovel sellers and makers are doing phenomenal - and they have a vested interest to keep the party going with many sweetheart financing/equity deals.