It's going to get even worse. Now, the FCC allows translators on second-adjacents to local stations. Which means we will soon have a damn religious satellator on EVERY semi-open frequency! In many areas, these translators compete with long-established regional stations, resulting in a horrible noise mess as the two stations fight for the frequency.
WOGK-93.7 in Ocala is a great example. As it's sweepers proclaimed, you used to be able to hear this station "From the Georgia line to Disney World." Then, Vero Beach moved from 93.5 to 93.7. This caused interference around the Orlando airport and points east. Then, the 93.7 Tallahassee translator went on, causing interference in that area. (BTW, this translator is for the FSU station...why the hell do they need a translator IN TALLAHASSEE?) Pretty soon, a 93.7 translator showed up in Kissimmee. Now, there's one in Jacksonville. As a result of all this encroachment, the formerly huge WOGK coverage has been cut by about 1/3.
Another issue is the new Class A's which pop up like mushrooms whenever a larger station moves and/or is downgraded. The former 99.9/Palatka (another full Class C monster) has been downgraded to C1 and moved into Jacksonville. No fewer than THREE new allocations have risen in it's place: 99.5/Daytona Beach Shores, 99.7/Silver Springs Shores, and 99.9/Homosassa Springs. Result? More crowding and interference.
The interference issue is especially problematic in Florida, due to the frequent occurance of tropospheric ducting. As anyone who has ever lived there knows, it doesn't take much atmospheric enhancement to get things rolling. Then, you have an already crowded FM band become even more jammed. When the band is open, I've heard as many as four stations fighting for a frequency.
The end result of all this is reduced listenership for radio. There are just too many choices available now for people to listen to a signal that contains any amount of interference. So, while the big conglomerates think it's a winning strategy to shoehorn more and more stations onto an overcrowded dial, the end result is a loss of listeners and revenue as these stations mix and cause increased levels of interference to each other.