Stating the obvious, but maybe it's because the bulk of music played on the radio sucks? There is a lot of good music out there -- it's just hard to find.
The study reports that 803 million CDs were sold in 2002, which was a decrease of about 80 million from the previous year. The RIAA has blamed the majority of the decrease on piracy, and has maintained that argument in recent years as music sales have faltered. Yet according to the study, the impact from file sharing could not have been more than 6 million albums total in 2002, leaving 74 million unsold CDs without an excuse for sitting on shelves.
So what's the problem with music? The study echoes many of the observations you've read here at Ars. First, because the recording industry focuses on units shipped rather than sold, the decline can be attributed in part to reduced inventory. Gone are the days when Best Buy and others wanted a ton of unsold stock sitting around, so they order less CDs. The study also highlighted the growth in DVD sales during that same period as a possible explanation for why customers weren't opening their wallets: they were busy buying DVDs.
http://arstechnica.com/news.ars/post/20070212-8813.html
