Pix is for domestic use right? So tourists who come to Brazil still use Visa and Mastercard as well as Brazilian tourists who travel abroad. Visa and Mastercard are companies of the past, crypto and stablecoins will destroy them sooner or later.
How many transactions can you ran per second on major coins like BTC?
No, for example Argentinian tourists use Belo[1] for paying in Brazil. No need for credit cards.
"crypto and stablecoins will destroy them sooner or later."
LOL!
Cross border payment with QR codes are already a thing in plenty of Southeast and East Asian countries. Crypto and stablecoins aren't needed (nor wanted, due to money laundering risks).