Earlier quoted context omitted.
I think that there was a recent HN thread that linked to an article which argued that the credit card system of USA has the purpose of taking money from the poor and giving them to the rich, and the estimated amount of the money transferred in this way was huge. The EU limits for card fees prevent this in Europe, which is very good.
Do you have a link? Highly interested in that thread. Do you know if people discussed how state solutions faired? I'm assuming something like Pix from the Brazilian Central Bank does an even better job at prevention while providing a public service.
Pix, UPI, and a few more