Sounds like pix is very similar to the Swedish swish. Phone numbers are used for identity, payments are instant, businesses often have qr codes with their identity etc..
As is the dominant e-ID platform, because our politicians are fond of bank cartels.
It kind of works and Swish does too, unless they're down which happens every now and then, but there is room for improvement that would be easier realised as a public sector endeavour.
If the e-krona happens, that would be a better comparison.