It happens in smaller countries, where local payment schemes manage to get traction. On global level it's A LOT harder. Main challenge is that fees are invisib

It happens in smaller countries, where local payment schemes manage to get traction. On global level it's A LOT harder. Main challenge is that fees are invisible for end users, so they will default to most widely accepted payment method. Today that's Visa/MC by a landslide. To really threaten them you would have to be accepted at virtually 100% of merchants that accept them today. Even a few percent behind and most of the people will not use your solution. That means connecting billions of banks, merchants and intermediaries both from technology and business perspective.