It's counter-intuitive, but if you think about it, less develop countries are in a better position to deploy fully integrated systems.
E.g.: Portugal has a great, free, cross-bank, ATM system since the beginning [1] because Portuguese banks were late to the party in regards to deploying such machines. They could learn from other countries and create a more resilient system, which has since been expanded to be able to pay various services, from utilities, fines, tolls, phones, withdrawals without cards (with phone), etc. Countries that developed earlier have to suffer with a lot of baggage and the Banking industry is not known for it's desire to innovate its tech.