If something is that easy to copy why try to control it? Whoever compared this to downloading music/file sharing is right. If something is that easy to copy I don't think there is a lot you can do. I'm new to quilting and I have never bought a pattern. So much of it's free on line or you can often figure it out just by looking at a picture.
Isn't this a little like saying the only person allowed to sell shirts with sleeves is the person that invented sleeves?