I disagree with the statement about no difference between making money and free performances. I can play any song at an open mic (no money involved) if I don't claim it to be my work, or have 20 friends over to my house and play a cd, no money involved, and no copyright violation. Copyrights exist to protect the work from being claimed as someone else's and/or denying compensation to the artist. If I make money from someone else's song I am required to compensate them.