> Chip and pin and NFC transitions took off much quicker outside the US because merchants generally owned more of the chargeback risk than in the US, and therefore were willing to update their POS equipment accordingly.

Not really. The risk of all fraud is initial borne by banks issuing the cards, after all they’re only parties that have an actual financial relationship with the person providing the cash/debt. If something which results in that person cash/debt being stolen, it’s between that person and their bank to figure out who’s liable for the lost money. Chargebacks are just a mechanism for banks to recover some of that lost money, once the liability between the card holder and the bank has been settled.

One of the big reasons why Chip and PIN etc took off outside of the US, is that the US is very accepting of fraud, and charging crazy high interchange rates (up to 10x what they are in Europe) so the cost of fraud is spread over many individuals. Other parts of the world have regulations capping interchange rates, and providing better consumer protection, demanding that banks and payment networks tackle fraud, rather than increase the cost of everything by 1-2% to cover fraud losses.