The big European countries still have their National Systems that work very well.
If the US would nuke Visa/MC in Germany, payments inside Germany would still work very well via Girocard (except for some people that bank with cheapskate neobanks)
In Belgium, Maestro card was halted and my bank switched to MasterCard. Then I paid on some USA website and they managed to pull money from my account based on only the card number, without using the bank website's chip+pin. I was flabberghasted on how we silently managed to get such a huge setback in both security and national independence. I stopped payments using non-EU entities.
Wero is coming and it should work across Europe