BTW, I believe that the sales of catalog albums will multiply by a factor of 10 if the recording companies only charged $5 or less for them. At that pricepoint, it wouldn't even be worth the time and trouble to put together an album from MP3s downloaded off the web.
Yes, but if nobody were downloading the RIAA's music on the web, the RIAA wouldn't have an excuse to shut down filesharing. Since filesharing gets around the RIAA's oligopoly on "promotion", the RIAA would stand to lose huge amounts of money from it even (especially!) if nobody could copy RIAA music.