Tim Oren's great weblog, Due Dilligence, pointed me to this article on BusinessPundit that suggests the music industry's real problem is that it's being displaced from people's attention by other media–and that video games are taking the biggest chunk out of the disposable dollars and free time of the music industry's traditional audience for its volume product.
No big surprise there. Most of the music I buy these days probably doesn't even show up on the RIAA's radar–I buy direct from bands, or direct from independent labels, or on iTunes; my only “traditional purchase” recently was of a Bo Diddley compilation–and that isn't exactly Top 40.