Demand does not mean there's no bubble
Just because infrastructure is in high demand does not equate to a sustainable business model.
If the folks above you are all scrambling to add users and are eating the loses between what customers will pay and the cost of their underpinning services, you're still going to hit crunch point fairly soon.
LLM based offerings are useful. They're great at a few use cases.
But they're a long way from being worth paying vast sums for, which is what would need to happen for the entire stack to be sustainable.