This completely ignores how businesses treat Discover & American Express card holders. Sure, your average coffee shop with a square stand that pays an inflated

This completely ignores how businesses treat Discover & American Express card holders. Sure, your average coffee shop with a square stand that pays an inflated flat percentage rate does not care what card you tap, but any small business that that is using a payment processor that provides interchange pricing or qualified pricing is directly affected by experiencing double the cost to process your average discover or American Express card, and many will happily tell you they much prefer you to pay with cash, failing that debit, then Visa or MasterCard credit, due to the cost of processing. This merger also affects other oddball cards like JCB and Diners Club Card that ride on Discover's rails. One other aspect of this is Visa and MasterCard have been getting crazy with the interchange fees on their most premium credit card types, making American Express and Discover's standard rates look reasonable in comparison: https://www.creditdonkey.com/interchange-rates.html#visa https://www.creditdonkey.com/interchange-rates.html#visa