> since you now have two providers that could potentially ban you

But less chances that they both ban you roughly at the same time. So if A bans you, you move to B and start integrating C. Once you have integration with C ready, you then support B&C in production.

If in the future B or C ban you, then do same as above with D.

BTW, what would be your first choice for a $StripeAlternative nowadays?