A % of that also goes to the issuing bank*, not to MC/Visa, so I suspect the mentioned 0.2% is talking about what MC/Visa has as their cut.
*: That's also how banks can profitably offer things like cashback.
The low fees are for debt and high for credit cards and VISA/MC won't allow you to accebt only the debt cards
Visa's processes ~$14T in transactions. At 0.2% thats roughly ~$28B in revenue (VISA posted ~$40B in revenue in 2025) versus 2% is $280B in revenue.
EDIT: The 2~3% you're talking is the payment processor fees which get divvy'd out to acquiring processors, acquiring banks, gateways, merchant processing, etc. etc.
https://eur-lex.europa.eu/EN/legal-content/summary/fees-for-...
> Specifically, the regulation:
> caps interchange fees at 0.2% of the transaction value for consumer debit cards and at 0.3% for consumer credit cards;