IMNSHO, betting on mega data centers is betting against software and hardware innovation. LLM's already run on desktops and will eat up the long tail of uses faster than a bean counter switched to Excel from a mainframe Cobol app.

That leaves enterprise use for surveillance capitalism and job elimination, and government use for mass surveillance and more efficient killing. But that's just a case, IMO, of a few trying to corner the market on AI, with incredible duplication of resources until a single winner emerges (if possible) or until the incumbent business and defense powerhouses develop their own, which is highly likely as technology advances, and they already own the customer base(s).

I expect that a lot of incumbents will be issuing "NIH" directives.

AND the upshot is a vast amount of unused electrical generation. Except for fossil-fueled plants, a great glut of energy for heating and cooling homes for humans.

Concentration of wealth/power demands energy to drive entropy to zero.

It never gets there but a handful always try.