Except digital radio DOES offer something. In my market, I get FIVE formats via subchannels that I can't get anywhere else on the go. Classical, classic country, smooth jazz, alt. rock and ESPN. And that could be even more if the Cumulus stations ran subchannels, but they don't. Then there's the HD-2 relay of the local CC news talker, which brings the signal to me at night where the AM is completely covered by Cuba or Mexico.
In that sense, it's a net positive, but it's completely undone by bad technology. The classical station's HD won't decode on one of my two HD radios due to a defect in their encoder. The alt. rock is dead air and/or static right now because no one's paying attention, not even to the online stream. ESPN is off again, too. The news/talk, smooth jazz and classic country are on great signals, but again some 'glitch' with HD radio technology means the main channels come and go for no reason while the -2's are steady as can be.
A paragraph of positive offset by a paragraph of negative — HD in a nutshell.