DABs was adopted too early. Even if DAB2+ became common by 2015 or later this isn't better than the national radio stations available on Freeview and Freesat.
I have yet to get a good signal on a portable DAB radio and in some areas of the county there is no useful signal.
Perhaps internet radio is the future of both radio and TV but there is still a need for a cheaper broadcast radio service for people driving and away from mains and broadband.
DAB should be killed off before it drains more money. Digital radio from Freeview and Freesat already covers or will cover once the TV switch over is complete the country.Anyone with a Freeview enabled TV already can pick up a strong and high quality signal for all national radio without the need for DAB or a DAB radio.
The quality is higher than on DAB but can't be changed to a better format any more than DAB can be easily upgraded to DAB2+. This is not a problem for a computer based streamed radio service.
Local radio should be put on Freeview as part of a roll out of Freeview for mobile devices (smaller image, more compressed TV - the opposite of offering a limited number of HD channels by compressing further the other channels) for news reporting current topic, discussion and sports. This leaves high quality HD films, dramas and documentaries to HD Freesat and media on demand from iPlayer and subscription services.
With Android TV boxes providing smart TV to old sets for under £70 costs are falling rapidly and these can get away with software upgrades before needing more powerful hardware. 3D movies are going to muddy the options increase the bandwidth and low the image quality (compared to 1080p HD 2D programmes).