Yeah and it worked last time. As a Stripe customer myself with way less revenue than OP, I worry about this a lot. How can any sane company terminate any client with revenue (any size) without having been in contact to sort issues before hand or if not possible, to terminate them with a grace period?
You don't know what the OP has left out of their post. I am pretty sure Stripe didn't terminate a major customer like that overnight because some admin or bot got bored.
This is insanity.