> That's why many EU banks still offer corporate credit cards with huge cashback et

We're a business in the UK and the charges for accepting Business credit cards is much higher.

I don't have current charges to hand, but in 2023 Personal Credit Cards were 1.97% whilst for Business Credit Cards we were charged 3.43%. That's probably how they afford such high cashback/loyalty schemes.

I think we're paying about half those rates now. I know Amex is somewhere between Personal and Business charges.