300+ supermarkets accept it in Switzerland. It's not like they choose every crypto they want to accept, they just use a payment processor that supports a bunch. I don't see that as particularly hard to implement if there's demand.
Walmart probably won't, considering they don't even accept Apple Pay.
Spar Launches Switzerland’s First Nationwide Crypto Payment Rollout
Walmart probably won't, considering they don't even accept Apple Pay.
Spar Launches Switzerland’s First Nationwide Crypto Payment Rollout
https://cryptodnes.bg/en/spar-launches-switzerlands-first-na...