[tluyben2]

> either you except all VISA/Mastercard cards, or you except none.

There are many companies discriminating on card type; not accepting debit cards, not accepting business cards (which have higher fees for the merchant), not accepting credit cards, not accepting foreign cards, not accepting certain BIN ranges.

[avianlyric]

This breaks the Visa Mastercard rule. For which merchants can and will be fined.

Obviously smaller merchants can get away with it, because nobody cares enough. But get big enough, and an issuer is going get upset and start demanding the Visa/Mastercard enforce their rules.

[julianwachholz]

Except when companies outright openly discriminate any form of payment other than cash with a surcharge that directly benefits the card networks because those players are huge and they don't want to miss out on this free money.

I'm mostly referencing Just Eat Takeaway dot com which have increased their online payment fees to 3% now (at least in CH) which is ridiculous because there's no way such a large player has such high fees with any acquirer.