If you want to compare the costs of different approaches it’s probably a good idea to actually try to do that. What are the lifetime costs associated with 10 or 50 smaller ground stations that have one tether going in and out of them for example versus a single larger one that has 10 or 50 tethers going in and out of it? I’d start by trying to list the elements that could go into either option for example and go on from there.
The more thorough and exhaustive the analysis the more useful it would be. Now it’s jumping straight to the conclusion without doing the supporting work.