Not sure there is much actual profit in LLMs. It will be interesting to see promise meet reality, indeed.
I also think most hardware expenditures done today will lose their value quickly; as we saw with crypto, hardware manufacturers will make specialized hardware so the cost/performance ratio will go down by at least 90% within a few years, possibly more.
It's going to look a bit like oligarchs subsidizing consumer tech as they try to offload more ram than God could own.
But velocity down probably will mean a meaningful recession, so there's that.