I think the point is that bank payments, email spam filters, the risk of getting marked as "suspicious activity" as in GP, these become risk factors with a cloud infrastructure as much as, say, a power outage would be if you were self hosting.
When you self host something and you have a power outage, that counts as an interruption of service; when a major cloud provider suspends your account because of some chain of mistakes on your or their part, this doesn't impact their SLAs, because the service is technically fine.
Why would a credit card suddenly block charges from a well known company you've been recurring paying for X months or Y years.
Why would my email block one of the biggest service providers on the planet?