I think alot of this has to do with the CEO of Warner Music Group Edgar Bronfman, Jr.
You can read one article about him here
Slate.
Edgar Bronfman Jr. (Youthful Folly), meanwhile, has been busy running Seagram--the Bronfman-managed liquor conglomerate--into the ground. Three years ago, he liquidated Seagram's $9 billion stake in DuPont to buy the entertainment giant MCA (now Universal)
He just seems to be a greedy greedy man, and his philosphy is movie ticket prices should be set by the amount that movie cost to make. I beleive that was also the reasoning that Microsoft backed out of a deal to provide a music store.
Also the WMG seems to be in the middle of any suit that the RIAA files. Coincidence?