True, but cellular infrastructure is definitively in someone's territory. If I stick a phone mast up I'm still subject to things like planning permission even if the signal crosses a border. As far as I'm aware, space is pretty similar to international waters in that nobody is sovereign there.

It could lead to a bit of a "wild west" situation with governments giving themselves extraterritorial powers. In the late 1980s the British government gave itself very draconian powers to conduct armed raids on radio ships in international waters for example, they take a really dim view of information outside of state control even if they're not the state controlling it.