Forget cooling for a minute. Cooling dissipates energy but you need to collect the energy first and worry about powering the server. It’s going to be a solar-plus-battery system, which is heavy and expensive, with substantial launch costs.
You can’t just put an SSD or whatever in orbit and expect reasonable read latencies at all times. It’s in orbit. It moves. Half the time it’s on the wrong side of the planet.
Lots of the best extensions are basically "change this webpage when it loads to make it work better." You can't "disallow this behavior" without crippling them.
Be aware that there are existing markets for a whole set of appliances which are very, very "dumb" indeed. Take a look at Lehman's, based out of Ohio Amish country: https://www.lehmans.com/
It's hard to install spyware on something that doesn't run off electricity.
> A number of logistical reasons prevents us from moving the machines to another location which might offer space/power for free, so let's not allow the conversation to go that way.
and there's no way that overcoming those logistical reasons would be cheaper than $20,000? at all? okay, well then, I guess that limits your options doesn't it.