Cam girls thrive off Credit Cards.

Why?

Because dumb ass guys have a lot easier time spending money they haven't earned yet on cam sluts.

Bitcoin is money you've actually have.

Bitcoin will never be big in the web cam industry and that is the heart of porn atm.

You might be able to buy tokens with BTC one day, but it won't really matter because it will be through something like BitPay.  Yet another "Visa of Bitcoin" (maybe even more dominate over the industry and centralized than even visa.)