Being multi-payment processor still doesn't protect you fully. We had separate instances where Google In-App Purchases and Stripe halted payment processing until we were able to escalate via friends who worked at those companies to fix our issues. Customers on Stripe subscriptions through Google aren't going to all of a sudden switch. I guess it does limit blast radius somewhat, but it still sucks. It also forces us into the lowest common denominator of features supported across platforms (e.g., can't run a price reduction and an increased free trial period at the same time because of one payment provider).