Personally, I do not think that the public will take to DAB+ at all, as it is just another format that needs an expensive upgrade for little benefit, and tio illustrate my point - look at HDDVD - haven`t they just spectacularly withdrawn from the format wars? And who is going to spend a grand an a BluRay DVD recorder ?
Why get a recorder - I'll get a PC drive in year or sos time, buut we do have a PS3 for playback.
As to DAB - a bit of a flop, and FM, I think this will last for a while, no reason to change unlike TV.
With TV we got more channels into the same spectrum as you do not need the 3 channel spaces unlike analogue, also we get more TV channels per channel - not necessary any good. And I was was running the country I would use the freed spectrum for HDTV.
For DAB2 to work it will need to
1) Use FM band
2) Sound better than FM or DAB, which means quite high bit rates.
And forget about clearing spectrum for sale - just use more efficiently.
Quick think - I have at least 10 FM radio capable things only 2 are DAB convertable (AV receiver - plug it in, 1 ghetto blaster has audio in), both analogue TVs can use DTTV boxes, other TV is digital.
Also never used analogue on the portable LCD