It's only radio when the "service provider" is the immutable laws of physics and no money changes hands to an intermediate
delivery system. The other modes may be "broadcasting", but not radio.
There's no reason the equivalent of "streaming" couldn't have been done in analog 40 years ago over plain-old telephone lines,
if anyone had wanted to run up the phone bill. When you call up a radio station and hear the audio while on hold, that's streaming.
If I can't hear the local commercials, weather, and news, it's not radio, and could be from anywhere or no where all.
That's just too disembodied to be radio. Not that it isn't worth listening to, but it isn't radio either.
I've tried using a 3G card in a laptop to stream to a part 15 FM converter in the car, and it's a pretty clunky setup.
As I crossed Iowa, the signal dropped out in every little valley and seldom re-connected.
Letting a stream buffer for 5 minutes before starting it only worked until I had accumulated 5 minutes of "no signal", then it's back to square one. Radio doesn't forget what it's suppposed to be doing and need to be restarted....it works in real time, or there is no signal,
or the radio is broken. Some day there may be enough coverage to make such a system "work" but the lack of local commercials, etc., still makes it something other than "radio" to me. A remote tuner located somewhere else, receiving "real" rado, then streaming THAT over the internet, is more like radio, because the source material is the actual air signal.