This has been my theory for a couple years and it's exciting to see it come to fruition.
@Apple never wanted to be a credit card company. It wants to create lock-in benefits to its core money-maker: the iOS ecosystem, and it wants to (privately) own more types of user data.
Mobile and QR payments took off in other countries (eg. Alipay/WeChat Pay in China), but they lagged significantly in the US for years.
Why? No superapps. Many people have credit cards, but not everyone has *one* app that they can use to pay for anything, anywhere.
If a company were going to bring mobile payments to the US, it had to unseat the ubiquitous credit card, and that meant it had to be a product that was already in everyone's pockets. There are vanishingly few companies that fit that profile, and Apple is one of them.