The RIAA is still desperately trying to hold on to the radio broadcast model - have a look at the royalty rates they want to impose on streaming music:

A "performance" is defined as the streaming of one song to one listener; thus a station that has an average audience of 500 listeners racks up 500 "performances" for each song it plays.

The minimum fee is $500 per channel per year. There is no clear definition of what a 'channel' is for services that make up individualized playlists for listeners.

Their detachment from reality is nearly complete; there's simply no way to run a web streaming business on that basis unless it's on the scale of a radio broadcast business - and that's just not the way the web works.