Corporations pay what the market dictactes. Consumers who keep buying their iPad, iPhone and Xbox, while knowing really well what's going on in China are responsible for this too.
I don't think the "corporation pay" argument applies in the creative industry as much as in the electronics industry. It's not like movies are made with slave labour.
Ha! You've never worked as a production runner on a set! :-)
Seriously, though, it's exactly the corporate mentality that is the problem regarding copyright. The corporates (labels and studios) want to make as much money as they can without adjusting their business models to changes in technology and the marketplace. Look at Hollywood accounting, where films never make a technical profit, thus they don't have to pay out on profit sharing agreements (for example, the Tolkien Estate's lawsuit against New Line for not paying royalties on LOTR). The same thin occurs in music, where artists wind up so in debt to their labels with inflated production costs that they barely break even. It's the studios and the labels that are pushing the extension of copyright to the point of unsustainability.