As a marketing manager for 10 years (sales for Clear Channel is mixed in there early on - subsidiary isn't around anymore), I can certainly testify that you've hit the nail on the head here. The last I bought a radio spot was likely 3 years ago, maybe 4. Now, it isn't even a thought because stations aren't even trying to sell air-time. Every call I get is for digital -- display ads, geo-targeting, mobile . . . I have a whole new terminology to learn. And it's not just an ad, it's, like you said, looking to them to be your digital marketing consultant. I'm not used to it yet; I miss being pitched dayparts and :10/:15/:30 spots.
RE: How Radio Stations Are Killing Themselves