It's not interesting to say "this is a bubble!" I've heard that about virtually everything (and in many cases it's likely true). What is interesting is pointing out the mechanics that make the bubble pop.

This is precisely what makes the movie the Big Short interesting: we see that people did identify, within a reasonable time frame, when people would start defaulting and how that would cascade into a true crisis.

It's pretty clear that while the fruits of AI are quite useful, the entire thing is rife with very questionable financial engineering... but I still don't know what it is that makes all of this break. For example, it's obvious that the SpaceX IPO is a massive wealth transfer program, but it's not obvious that it will immediately end in a crash. Given how irrational the stock market has been, I don't see a reason it can't continue to be irrational for long after the bag has been handed over to the retail investors and retirement funds.

Also, SpaceX is a rocket and communications company with a secondary AI play, where Anthropic and OpenAI are pure AI companies.

And it is far and away the world leader in satellite launch capacity and satellite internet.

Does that justify the massive valuation? Probably not. But it's a factor.