And simpler still: If I control the copyright, *I* decide when it is given away and when it is subject to a fee. It's not up to you to "work in my best interest" by performing my work for your own profits. Again, why do you feel entitled to play a musician's work in your business for the sole purpose of increasing your business' profitability?
As for the idea that just because you don't get a physical copy, it isn't giving it away -- you're wrong. That's like saying that if I show a movie without paying rights, and let you leave without providing a videotaped copy, I'm not breaking the law.
Here's the simplest way to put it: You don't deserve to make money from my work without paying me for it. If my prices are too high, go somewhere else. I'll make my own business decisions, and fail or prosper the same as anyone else. But in the meantime, nobody deserves to improve their business by using something I thought up and copyrighted.