This is one where not the market but a country/group of countries need to rollout their own public payments so fees are minimal to zero.
(/s but you never know especially these days)
> The system was conceived by the Dutch banks ABN Amro, ING Bank, Postbank N.V. and Rabobank, to develop a single system for online payments that could be used by all banks.
Currently owned by EPI:
> The European Payments Initiative (EPI) is a unified digital payment service launched in 2020 and backed by sixteen founding European banks and payment service providers.
They even tried to extend it to other European countries in 2011: https://www.bnnvara.nl/kassa/artikelen/ideal-in-de-ban-van-m...