Solar energy is going to expensive in Antarctica.
We can imagine a situation where the server hardware becomes so cheap that the energy cost dominates. In that case, sticking the things in space could make sense, particularly if extremely low mass space PV (just a few microns thick) can be made to work and also work cheaply.
I am harping on this point because You can’t just say “but in future computes won’t need maintenance” because at that point you’re just engaging in speculative fiction that you have no way of knowing. I could say “in the future we’ll have cold fusion” and maybe that’s true but I have no way of knowing.
So given that you would need 2x the power that you’d need on earth. Compared to just putting a shitload of solar panels in a desert where non-astronauts can easily access it I don’t see the point.
And of course there’s the nuclear-power-plant sized elephant in the room; if power is the constraint it would still almost certainly be more economical to have a nuclear reactor than trying to get a data center in space.
Or, and hear me out, Elon is just a drug addict who makes shit up based on his 12-year-old-boy fantasies because it sounds neat and investors just eat it up.