If you are a local advertiser with a highly-defined demographic target market, and limited budget, I think it hurts, because they eliminated stations that offered fairly well defined demographics, and replaced them with more broad-based audience. So advertisers who are looking for a specific demographic probably have to pay for a lot of waste. And some pretty valuable listeners have probably been eliminated completely from the market as they will be pushed to online to hear the music they like.
In addition, if you're a local advertiser going after a demographic that listens to pop music, now you have to advertise on more stations to cover the same group, which increases costs. So again, for advertisers, it's probably not good.
From the radio station's point of view, it's probably a somewhat good thing because it's an easier sell, at least in their mind, because you have formats that advertisers understand and you don't have to try to explain - like what a Dave FM or Project 961 is.
And for national advertisers, it will ultimately probably be a good thing, if I am right about the future of terrestrial radio. I have said before and I will say again that I believe the radio companies are moving toward creating superstations and eliminating niche stations may be an effort in that direction. Basically, Cumulus, Clear Channel, CBS and other larger conglomerates will put together one master station for each format and feed those signals, talent, advertising and all, to stations in their markets.
It's a lot easier for the radio conglomerates to sell national radio spots and it's easier for them to sell those spots on well known formats. And for national advertisers, it's also good because their cost per exposure is far less for national ads than buying local airtime. That's my opinion.