Is this the case in other countries? My friend is Danish and he says most use MobilePay—which seems to charge per transaction rather than as a % of value (it's hard to tell).
“In March 2015, the European Parliament voted to cap interchange fees to 0.3% for credit cards and to 0.2% for debit cards, which was subsequently enacted under Regulation (EU) 2015/751 with effect from 8 June 2015. The caps apply only to personal cards where there is an intermediary, not to cards issued to businesses or to cards issued by American Express.”