Payment systems take huge fees. It is always good if they get back to the country and not elsewhere. Digital paying is something fundamental. Like electricity.
* may: banks are allowed to charge.
Pix was such a game changer. It is perfect.
I wish. That's off by 50%
That is the monopoly cost. UPI is free for both payee and payer. Whatever it costs banks to operate it is covered by reduced cost of dealing with cash/consumer.