I doubt that data centres built for AI and full of GPU with very limited lifetimes and mostly powered by polluting gas turbines will have any consequential use.
They may well become the modern equivalent of coal mining's slag heaps.
Current attempts to repurpose cryptocurrency mining data centres to AI illustrate the problem of finding new uses for data centres.
https://digitalmarketreports.com/news/25353/transition-from-crypto-mining-to-ai-data-centers-faces-significant-challenges/