alt Hacker NewsStarlink (collectively) already has 10 times the solar power of ISS, with present-day launch capabilities. If Starship works out (not guaranteed) launch cost should drop to ~$100/kg, which would enable very large constellations.
Musk is planning for 1 megaton/year of satellites, each with 100kW, yielding about 100GW per year.[1]
He thinks they can do that in 4 years, but adjusting for Elon-time, it's probably no less than 8 years, if ever.
But will the AI money last that long? Maybe not.
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Sure, it is impressive how much solar power Starlink currently captures, but ISS actually does not get that much - as far as I can tell its about 250 kW maximum even with the new roll-out solar arrays that have been installed quite recently.
So about 2.5 MW of solar potential ? That's indeed quite impressive, but for serious compute a lot of energy needs cooling will eat into that.