The RIAA hates everything that doesn't make them money.

from Dailyplacebo.com

The RIAA hates everything that doesn't make them money. That's right, the RIAA hates puppies and wants to destroy them. So its no surprise that they hate and want to destroy webcasters. Especially since webcasters tend to play non-RIAA music. In a very mafioso "you'll use our service or no service at all" move the RIAA is backing royalty hikes. So smaller webcasters will be unable to pay the higher fees and driven out of business (even if they don't play RIAA music), further solidifying th RIAA's monopolistic grasp on what music is to be marketed. They don't care if they get the royalties, just that the webcasters get taken down; which makes less competition for the distribution of music whereby strengthening the RIAA's -say it with me- monopoly on the music industry.

Techdirt: Why Does The RIAA Hate Webcasters? Webcasters Don't Play Very Much RIAA Music

well said!