Don't we have something like net neutrality but for money transfers? And besides, why do payment processors even know/care what their customers use their money

Don't we have something like net neutrality but for money transfers? And besides, why do payment processors even know/care what their customers use their money for as long as it's legal? If you want to ban porn, fine, but do it through the law, and don't let every company make their own laws. Especially if they are a quasi monopoly (have power).