Are we all just ignoring the ton of evidence that FM has been losing music listeners for the past decade or so, and that the mass evacuation in the younger demos is forcing FMs to move into talk, news and sports? CBS, Cox, Bonneville/Hubbard, et al aren't killing-off their longtime AC & Rock FMs on a hunch. These outfits spend millions on market research, and what it has shown in every market is that the remaining audience for music on FM has been getting older and older and older for years--and that the "demo creep" has picked up steam in the past couple years.
So if you're planning on being in the radio biz 10 or 15 years down the road, you'd better stake out your turf in the talk format of your choice on FM, now. Because by 2020 AM will be gone and radio--what we think of now as "FM"--will be all-talk, of one form or another.
FWIW, Harrisburg's little neighbor to the north, State College, already has two talkers on FM, it seems. The question for Cumulus isn't merely how many CHRs or ACs or Countrys they can cram into one area, but how long they expect advertisers to hang onto the illusion that anyone under 40 (or 50) is still listening.