What kind of restrictions? Isn't a VITA data stream broadband SDR data? The entire radio implementation would seemingly be under the control of the client.

I would assume that one of the value propositions of having many ground stations to choose from is that one could simply rent one that was closest to the next flyover.

So I'm curious what factors you are thinking of that would not make sense as part of the service offering but would be needed by would-be customers of the service?