Partly Sirius' fault:
""There's been some tough talk from some of the labels," he said. Record labels haven't been happy with Sirius's new S50 radio which includes an MP3 player that allows users to record several hours of programming. The music industry insists that because of this "interactive" service, which is entitled to higher fees, satellite radio companies should have to step up and pay more."
Regular radio broadcasters don't sell equipment to allow taping songs so you don't have to buy them. This blurs the line between a broadcast service and a subscription service like Napster (which pays $6-8 a month to the record companies to allow users to rent music)