By not demanding better legislation, you're still being ripped off. What you describe as a "very nice low rate" is higher than the legislated EU wide limit.
https://eur-lex.europa.eu/EN/legal-content/summary/fees-for-...
https://eur-lex.europa.eu/EN/legal-content/summary/fees-for-...
You, and people who use such cards, do. But everyone else is having to pay for your cash back.
In particular the articles talks about exemptions:
> provides for a limited number of exemptions, such as business cards used only for business expenses being charged directly to the account of the company;