I'm not so sure. More than reining in prices, knock-offs stifle creativity: much of the time it's not worthwhile to create something if someone else makes all the money off of it. But this is where the idea of salvaged designs starts to have appeal. If someone abandoned a design and didn't expect to get anything from it, when someone else salvages it, they demonstrate that it actually has inherent value and appeal after all - that the design "stood the test of time" in a way. If a design inadvertently gets new life as public domain, it encourages other designers to value their work, not give up, and to do good jobs.

Then there is the question of associations vs actual ownership. I mean, the black and orange Molteni jersey isn't a bad design, but that's not why anyone buys it. I think if anyone deserves royalties from it, it's The Cannibal, but I don't think he has the rights to any.