It may be economically infeasible for them to moderate, but economics is not a "get out of ethics free" card. IMHO, we've gotten too comfortable with tech companies passing the buck on negative externalities that they create or profit from.

We wouldn't accept a "can't do it, not economically feasible" answer from an industrial chemicals company that's been asked to stop polluting a river, and I don't see why PornHub should be any different.

But the resolution isn't impossible, especially for a company of MindGeek's scale: Remove anonymous uploads entirely. Require channels establish their and their performers legal identity (which for monetization, many have to do anyways), and require metadata on all performers in any video (presumably allowing them to publicly display as anonymous or with a stage name as adequate), and verify the consent of those performers to be posted on that channel.