In addition to the 'creating is work' argument, my understanding of how copyright laws work is "if you don't defend it, you effectively don't have it." So, say they don't defend their rights to the license for the olympics because 'hey millions of people world wide will be hearing my name associated with my creative composition!' Then some corporation hocks it for a project and makes a ton of money using it. You sue the corporation and the court determination is ... "tough luck kid, you didn't defend your copyright before that." So SOME form of licensing needs to be there so artists can control the decision, and ideally the fee, for their work in different situations, but where lawyers are involved, fees go up.