Here's an idea, let's do this instead: we put them in the desert, or on boats or zeppelins or whatever, and we pretend they're in space. If anybody asks, those fuckers are in space, man. Computin' in the cosmos.

As far as I can tell from random articles online, it seems that as a rule of thumb, you need about 6 humans +1.5 humans per megawatt - and that's just for running the datacenter part, different people maintain the power generation infrastructure. Now, if you have to house those people in space or fly them up whenever they have to do anything, that's going to destroy your budget.

If you want to assume a level of automation that makes that unnecessary, that's fine, but then you need to also assume that same level of automation in earth based data centers too, and everything that goes with that.