---1 download != 1 lost sale.---
So if you download a movie, you would not need to have bought it, or hired it? Same for music? So, when dowlaoding via P2P wasnt in existence you never paid money for a music CD, movie, movie tickets, game, etc?
That's a one sided view... what about when:
Person downloads the 128kbit mp3 version of a band's album, they like it so they do go an buy the CD.
Person downloads an album of a band touring here soon, based on liking the album they purchase a ticket to the concert, they loved the concert so they purchase and official t-shirt
Person doesn't download the album, forgets about the band doesn't buy anything.
Look, if bands want to give out their songs for free, and then give people a way to pay money for higher quality versions etc later, that's cool, but taking something that should have been paid for is not right even if the consequences are eventually positive for the person effected. They could have just as easily got you to the show if they had given out the album for free.