Anytime porn is discussed on the net, it goes from philosophical to economic, and then back again.
I think having a union, where workers were free to organize for their own collective interests instead of the market and organized business dictating just about everything... would mitigate some of the philosophical problems with porn. Not all, but many.
"The worker has the right to leave his boss, but can she do it? And if she does quit him, is it in order to lead a free life; where she will have no master but herself? No, she leaves to sell herself to another employer. She's driven by the same hunger. Thus the worker's liberty is only a theoretical freedom, lacking any means of realization; an utter falsehood."