On supply side 3 years is about right, new plants won't come online faster. Demand might collapse faster if some AI companies go bankrupt or at very least fail next funding round.

Depends on who goes bankrupt and what happens to their IP when it happens. If OpenAI or Anthropic liquidate, and the IP gets scooped up by MS, Amazon or Google, demand will remain, the public clouds will still want to run them. Maybe some pressure will come off if they lose the appetite to train new models for a while, inference is cheaper, but they'll still finish some of the buildout.