Digital 'radio' is well under way.
Where the bulk of the action is - the internet. The final change-over will be legislated at some point. Within the next 10 years of so nearly everything made will have wifi capabilities and wifi will be available to 95% of the population.
Most traditional radio stations have internet streams, even some of the college ones.
I took the plunge and picked up an internet audio streamer a while back.
OTA stations that are too far away are now available to me. As are those from all over the world. The list of internet only 'stations' is immense, the choices of genres is endless.
The SQ of many is excellent, many even have multiple streams in varying bit rates to choose from.
When every car, every phone, pad and whatever soon replaces those devices comes out is wifi connected to the whole world, traditional radio broadcast will eventually be relegated to a specialty segment of society.
I'm sure there will always be some enthusiasts to keep OTA alive. Maybe we'll be back to the days of 'rebel' stations from across the border.
Dom?