There's only a rack worth of compute on each satellite. There is nothing monstrous to deal with individually. The plans are to put up a very large quantity of these which will sum up to a large amount.

That probably makes training on them less effective, and that would likely remain a land based thing, but for inference, any given person probably doesn't need more than 1 rack of compute to themselves, and if they do, they'd probably be using something land based.