[margana]

The hard part about ditching Visa and Mastercard is keeping the ability to make international payments even outside of EU. If you still need Visa or Mastercard to buy anything from outside of EU, including any non-EU digital service, most people would still have a Visa or Mastercard.

Russia did it because they're blocked from everywhere anyway and can't get Visa or Mastercard anyway. So this isn't really a concern. For an EU credit card to be successful and actually displace Visa/Mastercard among EU citizens, we would have to convince every merchant from Philippines to Argentina to South Africa to accept it.

If Visa works everywhere, and Eurocard would work only in Europe, your options would be to have either only Visa or have both. And few people would would want to get multiple cards if one works universally already.