The reason being Discover (US) - JCB (Japan) - UnionPay (China) is a joint network in and of themselves, the three networks have a reciprocal agreement with other. If you go to the middle of nowhere in Japan or China a Discover card is actually your best bet moreso than Amex/MasterCard/Visa. I miss when JCB used to issue cards in the US before they ended all operations here…Waiting for Capital One to swoop in from nowhere to win the deal. They are buying Discover Financial so they could act as both the payment network and the issuing bank. Capital One also could easily take over the Apple Savings account.
For those wondering, Discover Card is actually accepted at slightly more places around the world and in the U.S. than American Express according to WalletHub
Discover and American Express also have lower acceptance rates than the other networks, although Discover holds the edge over Amex in that regard. Discover is accepted at 10.64 million U.S. merchant locations and in more than 200 countries. American Express lags behind at 10.6 million and 160+, respectively.
and NerdWallet
Categorically wrong. Amex was once expensive to accept, but rates are standard and very reasonable nowadays compared to the sliding scale Visa and MasterCard uses. The top end of each, the Visa Infinite and MasterCard World Elite are especially hated by cheap and dishonest merchants, who sometimes will even put up signs saying no Visa Infinite.I use my platinum amex for just about everything, and use my Apple Card when I'm somewhere amex isn't accepted. A lot of the smaller stores, my wife's nail salon, and international locations don't like AMEX. They have the highest fee to the retailer. So hoping visa wins this one or I'll most likely never use my Apple Card again.