OK, so you switch off a completely fine technology with billions invested, rendering useless multi-millions of fine working radios. For what? I think this will be the death blow to radio. People will not go DAB if not absolutely needed, they will essentially try to go "internet" directly and thereby eliminating classic "radio". Maybe you'll use the DAB in your car sometimes, but I can't imagine it will happen that yo…
Wouldn't we be better using this spectrum for even more data to stream anything, including DAB?
Smartphone chips already include FM so there's no extra cost to reaching mobile users, with no extra bandwidth consumption. (Not FM's fault if some smartphone makers don't use the FM capabilities and make users consume expensive and limited cellular spectrum instead.)
The drawbacks with FM are (1) the limited number of stations and (2) users can't choose their own music. That's why there's a market for different services.
However, there's still a market for live radio: it's free and has billions of listeners. It's also a very efficient way of handling phone-ins and live commentaries on sports events, among other things.