quick, simple, easy answer - and it is wrong
Copyright laws make it possible for me to enjoy the fruits of my labor. I hold about eight copyrights on various technical manuals, I print them and sell them. If you want to know what I know about the subject, you have to pay me.
I see no difference (other than I don't charge anywhere near as much) between what I do and paying tuition at a university - if you want to know what they know about the subject, you have to pay them.
The existence of copyright protection is what makes it possible for me to get paid. If there were NO money in doing this, I wouldn't bother, and I would keep whatever I know to myself - just like the secretive guilds in the middle ages did.
People have asked me why I do not publish my books on electronic media (web, DVD, etc.), pointing out the great savings I could realize by not putting ink on paper. The reason I do NOT do that and WILL NOT do that is simple - once that book is digital, it is GONE, and I'll never make a cent on it again, ever. Why buy the cow when you can get the milk for free?
Sure, you could copy my book on a photocopier, but that takes rather more time and effort than three clicks on a mouse.
My books sell well, evidently people think I have something to say worth paying for - and that is flattering. I am NOT going to give away the store because if I do, I won't have any incentive to write more books other than to stroke my ego, and guess what - you can't eat ego, nor does it pay the bills.
Before you gloat about getting something free, look at the larger picture. If no one can get paid anything for creative work, then an awful lot of creative work is not going to get done, and we will all be the poorer for it.
As far as "music" is concerned, I think an awful lot of what passes for music these days is cynical marketing and exploitation - and it is not worth buying. So I don't, but that is my opinion, people's tastes vary. My favorite composers have been dead for centuries, and their work is now in the public domain.
The RIAA has got to be the dumbest, most anti-consumer, corporate-owned-droid collection of morons the world has ever seen. Yes, there needs to be some way to recompense artists and writers, but if you ever want to see the WRONG ways to do it, RIAA has that down pat.
Anybody got some better ideas? How would YOU provide payment to the people who entertain you and educate you? You can't say their material is worthless, so how will you get them paid? (RIAA input not solicited here . . . )