I would completely understand if other types of debit card were accepted - but at least in the vast majority of my arguments with local shop owners, Visa Debit or Mastercard Debit are not accepted - cards which are otherwise accepted globally.

I understand if the the fees accepted need to be added on and covered by the consumer who wants to pay with the most convenient form of payment they have - but again in Germany that's not even a possibility. I find it quite strange that it's one of the only places (if not the only place) in Western Europe where you struggle to pay with either cash or a card type that is only available in the country.