It feels a little like arguing you can’t do business with visa’s customers if you refuse visa’s terms.
You could only accept MasterCard, but you’re choosing to limit your audience.
You could only accept MasterCard, but you’re choosing to limit your audience.
I can't reach iOS customers for payment processing without going through Apple's offering in payment processing (which interestingly enough takes a 10x higher cut than Visa, Stripe, et al.)
If Visa used their market leadership in payment processing to try to dominate other markets, then it would be comparable (and then they should absolutely get antitrust scrutiny).