OP wasn’t defending VISA policies, they were just realistically describing how taking on CC circuits with this premise is a risky approach that tries to fix a problem potential customers don’t have. What you are saying is in a completely different domain. Personally I think you’re right, but the only way to solve that is regulating the payment giants as a public utility, not picking a fight against a business model that is a lot of things, but not broken.

A business mode that relies on duopoly is broken and must be regulated.

I literally said it must be regulated. Depends what you mean by broken: for the business owners it’s not broken. For the users? Sure, but they are not stakeholders in the business. They are stakeholders in the society that an excessively successful business model is affecting negatively, hence: regulation.

So we agree.