Let me add that the stations aren't stealing the copyright. The labels are sending them this music. It's all voluntary. The radio stations aren't saying THEY made this music. They give full and fair credit to the creators, the artists who are featured on the music. They aren't reselling this music to advertisers, saying the advertisers are getting use of the music in some way. "This song by Michael Jackson is sponsored by Meineke Muffler." That may be how the royalty is handled, although the current draft of the law doesn't give radio that right.
Also, just playing music on the radio doesn't necessarily translate to revenue for the radio station. The fans of Pulse 87 in NY play lots of music, and have very dedicated fans. But that station is on the verge of going off the air for lack of money. Indie 103 in LA was a very popular music based station with very passionate fans. But it flipped formats because they were unable to make enough money. The assumption that the music attracts the revenue, thus the copyright holders deserve a percentage of that revenue is presumptuous.
Also, just playing music on the radio doesn't necessarily translate to revenue for the radio station. The fans of Pulse 87 in NY play lots of music, and have very dedicated fans. But that station is on the verge of going off the air for lack of money. Indie 103 in LA was a very popular music based station with very passionate fans. But it flipped formats because they were unable to make enough money. The assumption that the music attracts the revenue, thus the copyright holders deserve a percentage of that revenue is presumptuous.