Here's some math on how affordable that abundant LEO solar energy is:
First you have to pay energy to get to LEO
A Starship Launch costs[0] 51.75 TJ of energy in terms of its methane fuel.
It will be able to take a payload of 150 tonnes or 331,000 pounds[1].
How many computers is that?
One online estimate says a computer weights 80 lbs or 35 kg.
So 150000 kg / 35 kg/computer = approximately 4285 computers that we can launch into orbit per Starship.
51.75TJ / 4285 computers = approximately 12.08 GJ per computer to place it in orbit.
Let's say each computer is a H200 and consumes 700 watts continuously. How long would it need to run in orbit before it used as much energy for computation as it took to launch it?
12.08 GJ / 700 W = 12,080,000,000 J / 700 J/s = approximately 17,257,143 seconds.
Or about 6.5 months to break even on energy.
That sounds pretty good, except my estimate for the weight of each compute unit and associated power system & cooling etc. are probably underestimates by one or two orders of magnitude. In which case you'd be looking at 5 to 50 years to break even on energy, by which time the chips are obsolete and need to be replaced anyway.
[0] https://space.stackexchange.com/questions/66480/how-much-ene...
[1] https://en.wikipedia.org/wiki/SpaceX_Starship#Description