Given that you'll never be able to prevent copying, the question is, what can you do to minimize it? What can you do to make consumers happy enough with legitimate use of the system that they'll be willing to pay for it?
“I consider a good dinner party at our house to be where people drink and eat more than they're meant to. My husband is a really fantastic cook. His mother is Italian and if you walk into our house, we assume you're starving.”