>Data could be accidentally deleted. Corrupted data could be written...
You guys should really have versioning enabled. Now if someone deleted your data and all the versions, that could be possible, but that would take real effort and would like be malicious.
Nobody mentioned the case where you get locked out of your cloud provider with no humans to speak to, or your account gets deleted by the algorithm. Both happen routinely and we only hear about it when the victim takes to the socials.