Why do you think so? To me it seems like they actually fit the textbook definition very well. They're firms that require constant injection of massive amounts of new capital to stay solvent, with no clear path towards profitability. The only way anyone gets their money back is if more investors buy in. It would be easy to prove me wrong, all they have to do is start turning a profit. But they can't.

[edit] And worse, they've dragged major established players in the industry with them--Microsoft, Google, etc. So now an uncomfortably large fraction of the world's economy is resting on.. nothing. To be fair, I don't blame OpenAI or Anthropic for the bad behavior of the other tech giants. It's the entire tech sector that has lost their minds collectively. At some point making things that actually work lost out to fantastic delusions.