As I said in another post, I agree with the Motley Fool article. I think that once the dust settles, everyone will see the various advantages and disadvantages, and digital will simply be another choice that people make, rather than actually causing the death of traditional radio.
Because as we've seen, greed comes in many forms, and nothing stays the same. Right now, costs for internet usage are low. But at some point, the ISPs will find ways to come up with new charges, especially on bandwidth, and the use of internet for audio and video will be much more expensive than broadcast. Especially since all the broadcast infrastructure is already built and simple to use. Cost will trump choice, as people realize they don't make use of all the choices they have. That's starting to affect cable decisions. I myself made an adjustment to my plan based on an assessment of what I watch.
At the same time, although the value of music from a consumer point of view is zero, the music industry seems hell bent on increasing royalty costs to broadcasters. The fact is that if consumers don't want to pay record labels to buy their music, what makes anyone think they'll pay broadcasters to hear it? Regardless of the cost. Consumers want free music. Forcing internet broadcasters to pay increasing royalties that the broadcasters can't recoup just puts a squeeze on the internet broadcasters, and will cause consumers to go back to OTA radio.