What's wrong with that? All sorts of things discriminate against certain buyers. Primarily the location, the signage, the prices, the languages the staff speak,

What's wrong with that? All sorts of things discriminate against certain buyers. Primarily the location, the signage, the prices, the languages the staff speak, etc. And, in fact, not everyone is comfortable using cash, so even cash-only locations discriminate against people who don't want to carry cash, or people who don't believe in cash and want to do business through bartering. The Federal Reserve Bank of Atlanta did a study showing 97% of consumers had some kind of payment card(debit, credit, prepaid), and 99% of consumers used cash. So there is probably still some consumer that is not being satisfied by either payment cards or cash. If I was running a business, I don't think I would particularly care about that small of a slice of users to base my decision on it - it would probably come down to other things like overall cost of supporting cards or cash. https://www.atlantafed.org/-/media/documents/banking/consumer-payments/survey-of-consumer-payment-choice/2020/2020-survey-of-consumer-payment-choice.pdf https://www.atlantafed.org/-/media/documents/banking/consume...