Amongst the many many reasons for the decrease in CD sales are the many new (and exisiting) interests competing for consumer’s time. Video Games and Internet are two big and relatively new factors.
This chart says it all:
Please use the comments to demonstrate your own ignorance, unfamiliarity with empirical data and lack of respect for scientific knowledge. Be sure to create straw men and argue against things I have neither said nor implied. If you could repeat previously discredited memes or steer the conversation into irrelevant, off topic discussions, it would be appreciated. Lastly, kindly forgo all civility in your discourse . . . you are, after all, anonymous.