Earlier quoted context omitted.
Merchants WANT people to use credit cards. There is nothing stopping merchants from offering a cash/debit price and a credit price since 10 years ago. The frank dodd legislation made illegal for card networks to ban offering discounts for debit card payments, and in Mar 2017, the Supreme Court said merchants cannot be barred from advertising higher prices for credit cards. https://www.ftc.gov/tips-advice/business-cen…
I don't think "WANT" is the right word there. "WANT" is active, and I would posit that merchants "reluctantly accept reality" when it comes to credit cards. The obviously silly analogue would be that a merchant who dislikes guns could choose to hang a sign in their texas cafe with "no guns allowed", but they probably won't. That doesn't mean they WANT people to bring in guns, but that they think it would do too much…
I'm not sure if this is still the case, but if it is, then that is one situations where accepting credit cards pays for itself.
It is helpful to keep in mind that different businesses can pay wildly different fees for CC transactions. Walmart can sell you a $0.50 item for basically nothing, while a corner market might be better off if you stole it instead. So Walmart might absolutely want everyone to use credit cards while the corner market would likely prefer nobody did.