I might be more inclined to purchase a CD for 10 bucks (or less) for a band or song I heard once and sort of liked to see if the rest is worth it.... Basically, I am reluctant to spend 15+ for one song and I don't usually purchase singles from the iTunes (or equivalent) store. I think another thing that started this is the Wal-Mart exclusive that AC/DC, Kiss, and Miley Cirus (I have two girls... ugh). I hate Wal-mart, but as a KISS fan, I had to go in that darn store to get a two disc + DVD for $12... that was a pretty good deal (too bad the CD gets little play and was average at best). I don't like to see stuff be store exclusive. I don't think Wal-Mart is the lone culprit... Target and Best Buy have some of the same stuff going on.
A DVD/Blu-Ray movie should really not cost more than a single movie ticket... Honestly, how often do we replay DVD's as apposed to CD's (well... the music obtained from a CD)... I rip everything for a portable player or the car for the commute. Truth be told I am one that would prefer movie/music data be streamed/stored to hard disc, but that is a little ways off for mainstream. Most people like something they can hold in their hands.