this days every site want to make money for and getting a pron site to accept bitcoin as means of payment for them is a great opportunity for them to make more money because many people who has bitcoin can always pay with bitcoin for them watch pron movies so for me is great time for these site to make good money.
I agree the adult entertainment industry has yet to wake up to the powers of Bitcoin. I have a rough estimation that, it's revenue shall increase by 30-50% if Bitcoins are allowed to be used as payment processors. This shall drive to them people who loved porn and wanted to watch HD and exclusive videos but did not have the means to pay or did not wish to pay in dollars.