This is a great topic. I think there are a quite a few reasons that this happens. Some have already been said. But here is my take. I have been doing radio since the early 90's. When congress allowed a single company to own a very large number of stations, all the competition that went on before, especially for listeners , was destroyed for the most part. Without competition a station or stations really don't have compete for listeners as long as the ad revenue comes in.If your the only one in town you will get all the dough. It is amazing that I can call my sister 2,000 miles away listening to the same format and the play list are almost identical.You Know 3P.M East then same at 3P.M. West. And most of the new music, not all, is very poor. Compared to the before say the mid 90's. And of course, as already mentioned, MP3 players, Ipods, and even computers are taking a lot of listeners. I understand that radio needs to generate revenue, and commercials is how they do it. But to be honest commercials are distracting. Most younger people are in the moment listeners, meaning that they will tune out, especially when there are commercials.Another factor is that most "new announces" have never been to school for radio. They have never learned that radio, as most of us older announcers know, is "theater of the mind." I hear more of the younger announcers talking at "listeners", not making a personal one on one connection with a listener. That is another reason why for the most part Talk Radio may seem like a great avenue.People like being talked to, not talked at. And as far as non coms. I currently volunteer at one. They for the most part are an alternative. But they have there own set of issues. Take mine for example, we play all different formats. But there again lies another problem, Too much variety I think is a listener killer. I am the only one that plays mainstream music. From day one, the calls during my slot increased. One day my station manager just happened to be around the station and noticed that the phone kept ringing. I told him they were calls about my show and they were requesting songs.I had him answer quite a few, so he would know that these were real people, not just the same caller calling over and over. He did not expect to hear so many request. We are for the most part a small town, surrounded by huge mountains.So most commercial stations have a hard time serving our community. So he finally said there have never been so many calls during any show since they started broadcasting. And because non coms, for you that don't know, don't have commercials but rather get our operating cost and such covered with underwriting and donations.Kind like PBS. Anyways, I told him that it's not what you want to hear but what the listeners want to hear.Several businesses have wanted to start underwriting the station, but not with his current format. They want a more mainstream format (i.e 70's - 90's) He just refuses to change the format because he and a few of his friends like it.All I seem to hear is that the cooperate media is the boogie man. That would have been a lot of revenue. But the thing that really gets me is that he keeps asking me the same question about getting younger listeners almost every couple of days, I guess he is expecting a different answer. I do however like talk radio.It can be quite entertaining. Can't we all just get along!!!