[andrewstuart]

Even if its hard, your business should have a strategy for coming back up when a critical vendor cancels your account.

Not being able to survive a cloud vendor cancelling you is the 21st century equivalent of not having any backups.

[sparrish]

You still need to have backups, even in the 21st century.

Being brought down by a single vendor is poor engineering.

[sebazzz]

By convenience, backups are often stored on the cloud provider. Yes, this violates the rule of 3, but cloud providers often don't make it easy to do otherwise.