But imagine if Target, Walmart, Best Buy, etc. made store cards and they all integrated with Google/Apple Pay. When a customer enters the store, the app could automatically pick the right card. Google and Apple just needs to be cheaper than the rates charged by Visa/MC/Discover/Amex.
For example, I have a Target Redcard. Why isn't this card integrated with Google/Apply Pay? They've already setup the financial infrastructure to extend credit to customers. It should be a small step to add this to Apple/Google Pay.