If Starship launches end up in the $20 million range they would be easily economical. Running cable isn't free.
How do you cool a datacenter in a vacuum? You’d need ridiculous radiators to dump megawatts. How do you service it in space when something breaks?
And how many of these rockets would you have to launch to match the capacity of a mid-size terrestrial data center?
We’re not talking about launching little satellites here, we’re talking about replacing giant buildings.