You're making my point. It's not a matter of "fairness", as the OP was suggesting. It's a matter of market custom. There is no natural law that says that royalt

You're making my point. It's not a matter of "fairness", as the OP was suggesting. It's a matter of market custom. There is no natural law that says that royalty-based payment systems for "intellectual property" work are required. It's a custom.