The European Mobile Payment Association (EMPSA) consists of 16 members in 17 European Markets, representing more than 90 million users, more than one million merchants and hundreds of European Banks. Current members include: BAMCARD (Bosnia and Herzegovina), Bankart (Slovenia), BANCOMAT (Italy), Bancontact Payconiq Company (Belgium), Bizum (Spain), BLIK (Poland), BORICA AD (Bulgaria), Bluecode (Austria and Germany), DIAS S.A. (Greece) iDEAL (Netherlands), MobilePay (Denmark and Finland), Plick (Italy), SIBS (Portugal), Swish (Sweden), TWINT (Switzerland) und Vipps (Norway).
More being able to send money to people in other countries
Edit: also, they usually have local monopolies in their own country, there is only one MB Way active in Portugal