Your argument fails completely because sole-sourced != scarce != valuable != expensive. Henry Ford's Model T was available from only one manufacturer, but it was very inexpensive and valuable to its owners. One-eyed, three legged dogs are scarce, but only of value to a small number of people. Tickle me Elmo was scarce for a time, not because of the artificial constraints of trademark or copyright but because demand simply exceeded manufacturing capacity, it was very expensive, but never valuable in any intrinsic sense. Copyright (and trademark) allows the seller to set the price. but the marketplace still sets the value and that determines whether the product is common or rare. If you want to be free of progress (under any economic system), eliminate rewards to the creators and innovators. The Soviet Union was able to compete with the West on an Military Industrial basis and at the Olympics, but was largely devoid of nice consumer products because the Government rewarded the athletes, and arms innovators and manufacturers, and not the makers of washing machines or sanitary pads. I'm not arguing for the free market or for copyright, per se, so much as pointing out the logical fallacies in your argument.