Earlier quoted context omitted.
The real news is Apple specifically took a non competitive stance — making the API available to third parties like Stripe - rather than building in house, leveraging Apple Card connections, or similar
I am surprised Apple didn't make this a closed system and compete with Square for small businesses.
If it's iphones have reached saturation with small business owners, let's build a business on top of that already dug and locked in moat, then perhaps.
If it's offering this feature is a driver for more small business owners buying and sticking with iphones and the accompanying ecosystem, you can see how it's perhaps the smarter play to be an open platform here.