So would you reject private parties agreeing to selling you an item with restrictions? For example, if I make a painting, and only agree to sell it to you if you agree not to do anything to it, how would you handle this? Would you say it is illegal for me to add such a restriction? Would you say any such clauses would be rejected (even if we both had agreed to them)? Any such restrictions would reduce property rights, it seems, because I am no longer allowed to privately agree to terms with other parties regarding the exchange of my property.

I am not a fan of copyright law as it stands by any means, but this article (and comment) seem to go to far.