Yeah, we'll have to see about that. In reality even paying with regular money is to cumbersome for people. They rather watch ads.
Let alone starting with crypto, installing software, getting a wallet, money exchanged, ... The majority of people isn't going to do that just to watch porn.
So in theory this might be an idea to circumvent that. In practice, it's never going to happen. At least as I see it. Or are there any successful companies who rely on Monero to have their goods payed? And I don't mean like 0.5% of their turnover, but a substancial amount.