Perhaps those that buy discs are buying more because of the rental window, but I personally would rather just rent. I would also question how they calculated the effect of the window, there's a lot of variables that go into disc sales.
Either way, I think a revolt is in order. I suggest boycotting all theaters, disk sales, and licensed per rental movies until the studios agree to eliminate the window and stop harassing companies that rent discs they have purchased on the open market. If they need to charge more for the discs to make ends meet, so be it, but if they want to sell physical copies of their movies, the buyer has the right to do what they want with them.
