If someone has a design out there where this works and you can launch it economically on a rocket today, I wanna see that. And then I wanna compare it to the cost of setting up some data centers on earth (which BTW, you can service in real time, it sounds like these will be one-and-done launches).

The radiators are full of ammonia, they would be the heaviest thing involved. Thousands of gallons of ammonia would have to be launched into space.