I was in Norway recently - all their radio, with a very limited number of exceptions, is digital (DAB+). The vast majority of the commercial radio is nationally broadcast - not national network broadcasts with a bit of local news and local commercials, but fully national, the same program from Oslo to Tromsø. (Technically, DAB works on a single-frequency network that supports only the broadcast of the exact same synchronized feed across the network.)
The UK isn't quite there yet - a lot of the commercial radio networks (Heart, Smooth, Greatest Hits Radio et al) are made up of former local FM stations, so they still have some remnants of local broadcasting, mostly local news/traffic and ads, but all the actual programming is national.
In a lot of UK areas that have lost their local station into the network, new start-up independent DAB stations have appeared with much lower cost bases and local programming. Most have been on the air with live-and-local programming for a few years now, I'm listening to one now that's about to hit the five year mark, so it seems that there's space in the commercial market for both approaches.