The killer isn't "you can get banned" — that risk is known and quantifiable. It's "no human-reachable appeals process and no SLA on resolution." The unknown duration of the outage is what's existential, not the ban.

The mitigation playbook is brutal but well-known: DNS not locked to the vendor, data restorable from off-vendor backups, working credentials with a second provider. Most startups skip it because the math doesn't pencil — until it does, and then they're shutting down within a week.