The DAB route is a blind alley to nowhere except landfill! It's not compatible with the rest of the world and won't be successful.
I foolishly bought a DAB radio 4 or 5 years ago. What a waste of £200 that was. Reception is appalling.
DAB is '80s technology, superceded in the '90s and overtaken by the internet in the noughties. It's an idea out of it's time and needs to be binned.
Look to the internet (mobile and fixed) and iPlayer for the future. Make appliances wifi compatible. Beef up the broadband and we could end up making and exporting internet compatible devices to the rest of the world.