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It is not easy to radiate heat in space. You need a significant extra mass budget to radiate heat from hardware that is easily cooled in less volume on the surface. These will also be too large of a capital investment to operate as disposable satellites at the bottom of LEO. They will necessarily be higher up.

I'm bad at sarcasm apparently.

Well, unfortunately, it's not such common knowledge that it would be considered sarcastic by default. I have learned to be explicit by appending "/s" or "/j" so it's clearer.

If putting data centers in a vacuum is a good idea why not just put them in a thermos bottle here on earth?

If it made the energy free, we’d take a very good look at it.

This has been debunked countless times. You can't cool things efficiently in space.