If the country can't control it, what power do they have? GPS and sattelite TV can also be received anywhere, as long as you can somehow get a receiver for it there's little that can be done about it except maybe jamming. (I don't actually know if systems like GPS can be turned off on a per country basis)

That said, Starlink can be turned off on a per country basis, so the government can ask (or demand) that to be done. If they refuse, there may be consequences that can be escalated to a political level.