The physical RF spectrum is the local road. There are no more roads to take. No amount of economic policy supporting competition is going to bend the laws of physics, unless you're willing to shovel herculean amounts of resources into microcells (even smaller than 5G cell sites) to reduce contention (essentially replacing fiber and wifi).
Cell companies can more or less directly translate $ = bandwidth with no meaningful limit.
You have effectively unlimited RF bandwidth assuming ever smaller cell locations. Bluetooth is the equivalent of a new cell in under every 10 meters. And that’s with a tiny slice of the RF spectrum.
Forcing lower bandwidth versions of video and audio streams reduces local spectrum use. Do I really need anything above 480p on my iPhone? Probably not, so the carrier incentivizes me with zero rating.
