> How do you lose in this market if you do gpu?

You don't. Nvidia gets paid either way. They were never the ones in danger (outside of the buildout going bust and having a massive surplus of cheap, used GPUs flood the market).

> You can debate that llm producers will go bankrupt, some of them at least for sure.

And that's the risk that will cascade down and kill off a bunch of companies and cause a debt crisis. If (for example), OpenAI goes to Oracle and says "I promise I'll pay you, at some point in the future, $1T to build my datacenters" and then Oracle funds that build out with debt, and then OpenAI goes bust, or just doesn't make enough money or can't raise enough cash to start making payments on their IOU, Oracle now also can't pay their debt and will eventually go bust, and now the private credit market takes a huge haircut, potentially bankrupting entire funds (like what happened in '08).