I don't think that's what's happening. Visa is still usable on many other porn sites. The difference is a lot of the content on Pornhub is/was user uploaded a

I don't think that's what's happening. Visa is still usable on many other porn sites. The difference is a lot of the content on Pornhub is/was user uploaded and the process for documenting the legality of the content was a lot more loose. Commercial sites have everything very well documented and they know exactly who is in their content. If anything, Visa is pushing out user generated content in favor of more organized, glossy operations.