Sometime about 20 years ago we all got used to the idea of companies not having to actually make money on their business operations and I worry the bill for this is coming due soon
Alas, I don't see that likely to change.
Anthropic is also allegedly profitable https://www.reuters.com/business/anthropic-nears-first-quart...
The cynic in me says this is a numbers game by Elon and Dario to screw up Sam's IPO, along with SpaceX's filing (using the individuals' names rather than the companies because I also think this has become damagingly personal to the players involved).
https://en.wikipedia.org/wiki/Bengal_Bubble_of_1769
The point is that I don't think irrational exuberance in stocks is a recent thing.