The average person who does not download music spends £44 ($72) a year on CD's, while people who do pirate music spend about £77 ($126) a year on CD's.
http://news.bbc.co.uk/2/hi/technology/8337887.stm
If this is the case, should companies support file-sharing? I think so. It's like movie studios who put their videos in tape stores or on TV, or artists who put their music on the radio. If you let people sample a product, they are more likely to buy it in the future.
which is why we do music sharing. my friends and I split the songs on an album then after we download every single one we give the songs to each other and therefore we would get the entire album by only paying 99 cents