If the ai bubble bursts, these buildings will be able to be repurposed unlike rust belt factories. With all of that cooling, you could turn them into a weird form of multi-family housing. Or use them for indoor skate parks, kart racing tracks, whatever you can imagine. I don't think rust belt is an appropriate comparison. Also, these places don't hire that many people like a factory did. If the factory shut down, entire towns could collapse with it. If a data center shut down, maybe 20 people would notice????