I don't claim to be proficient at radio technologies. However to me it seems beneficial to standardize on low-level networking and addressing.

Much as IP is a standard for computer networks.

All digital broadcast content would be written in an application layer on top of this layer. Like bluetooth but directed at broadcasters.

A device (such as a tv tuner) would monitor the radio spectrum, identify packets belonging to it, and start working. Of course authentication is required so one can't hijack another's broadcast, but should not be a problem.

This way radio frequencies would not need to technically be permanently assigned to specific protocols or vendors. And kit would not need to be hard coded with frequencies to work in different countries.

This ability for dynamic frequency allocation could allow more efficient usage of the radio spectrum. Perhaps even to the point where a frequency is being used by radio stations during the day, but television at night.

Maybe this already exists?