Let's be clear about something. The sharing of copyrighted material is illegal and wrong to do.
And I don't give a damn. Yarrrrrrr I'm a pirate.
The problem is that big business is so caught up in The Way Things Were that they haven't been able to keep up with the fast moving world of the internet. They constantly struggle to limit the abilities of the internet even while record stores are closing down left and right, instead of spending their billions of monies trying to figure the best way to utilize it. Sooner or later it'll happen of course, it's just the natural progression of things. People have and always will find ways to get things which are meant to make money free instead, but the bigger the stigma against it and the more it's talked about the more people will partake in such activities.