Most countries don't have the same facilities as the US for creating payment-related businesses (financing, engineers with expertise in the field, close to the backbone visa/mc/banks, bureaucracy). It's probably much easier for an established company to bully their way in, than for one to grow locally.

That said, there are no excuses for trying, and there are exceptions; I sure hope they succeed. I'd love to work in an area as disruptive as this.