As someone who has spent her entire adult life studying cities, all I can say is:
Mood.
Blair Lorenzo / The Fox and the City
the best space datacenter bull argument, summarized
Video
Keith
honestly the biggest problem I see it solving right now is that a patchwork of zoning, regulation, and scattered land ownership make it vastly too hard to build all of the below:
1) a big solar array
2) a chilled warehouse for computers
3) the transmission cables that run between them