I agree natural monopolies such as ISPs can justify additional regulation. I'm not convinced payment processors are natural monopolies (see sibling thread, https://news.ycombinator.com/item?id=44683153 ).

> I just think that it is more realistic to focus on legislation around payment processors MC/VISA atm.

I think it would be really, really, really hard to pass legislation requiring payment processors to service all customers, especially if you're using porn video games as the champion of your cause. Even if it did pass, I suspect it'd be pretty quickly declared unconstitutional and personally, I think that would be the correct call.

We already have anti-trust laws. We've used them before. "All" we have to do is enforce them.