Or even here in the states and sometimes you can pay via PayPal or Venmo or QR code.
But at the end of the day, I can just tap my Visa card (or lately just Apple Pay) in way more places than anywhere else, from storefronts to vending machines, in Italy or Japan or Wisconsin, and it Just Works.
Building a network that is accepted anywhere in the world (if they want it, and short of sanctions) is a combination of engineering, marketing and management.