I'm glad to see more corporations stepping up and enforcing laws and morals. In today's fast moving world, courts and due process are simply not fast enough, and the law itself can be slow to catch up - after all, doing business with Pornhub was never ruled illegal.
You mean enforce your view on morals. I suspect you would be less happy if corporations enforced the morals of the quakers on what you were allowed to do.
You have to have a criminal complaint filed, and not have done what you needed to do. As far as I am aware, Pornhub hasn't been uncooperative at all with any laws on the books or law enforcement when the time came. Not that I've tested that assertion in depth.
Unless we're talking DMCA. In which case I shall commence to laugh, and laugh, and laugh, and laugh, and laugh.
There's about three crimes an AG/l would likely find it worth their time to move on, . Human/sex trafficking, (in particular exploitation of minors), facilitation, and maaaaybe not keeping up with the paperwork; but that's iffy, because technically, they're a platform, so if it were proven they had content being served of someone underage, then it's the submitter/content maker that'd have to be targeted, and Pornhub would be expected to cooperate given the proper warrats signed off on by a judge.
In the long-run, it'd probably be given a light touch by law enforcement, because it's amazing how much mileage they can get out of the platforms in terms of plotting out metadata for illegal material.
As to Mastercard's involvement, I take the same stance on payment processors trying to dictate transactions they will and won't do that I held when companies started the same nonsense with guns.
Start making moral judgements on my transactions, lose my business. Simple as. If you're in a centralized enough position in the supply chain to start pulling that non-sense, it's either time for a competitor to be started, or some anti-trust suits.
Get enough people to walk out wallet-wise and you tend to see less grandstanding. Bankers need to keep their noses in the books and rein in on illusions of policymaking through soft power.