[unprepare]

I think there is a fundamental difference between the internet and Radio.

Radio represents a hard-limited amount of spectrum. There is literally a maximum amount of broadcasts that are possible before you have to start overlapping on the same frequencies. Those pieces of spectrum can be owned or rented just like public address space on the internet.

The internet has no such limit, adding to the internet just makes the internet bigger, it doesn't push someone else off the internet.

The real corollary to pirate radio would be someone hijacking google.coms DNS records to point to their own website instead. And tthat is and should remain illegal.