Totally fair, but this doesn't clarify why a company like Fast needed to exist. It seems the existing payment processors are able to add this feature rather eas

Totally fair, but this doesn't clarify why a company like Fast needed to exist. It seems the existing payment processors are able to add this feature rather easily, and I don't see how a new player would be able to get over the integration hurdle to supplant PayPay/Stripe/AmazonPay/etc.