> having it on one cloud saves you resources.

All the major cloud storage providers tout geo-replication so that if an earthquake or meteor takes out a datacenter there’s still other copies.

But nothing can protect against an administrative SNAFU where you - or your cloud provider - and accidentally or intentionally deletes your account and everything’s gone in an instant (yes, there’s usually recourse and backups to recover from - but that’s hours or days of downtime).

Sometimes it isn’t even the cloud provider’s fault: see Adobe’s blameshifting onto the US executive for their dropping all their Venezuelan customers.

While Azure has the “Black Forest” unit which is legally - and technologically - firewalled off the main Azure cloud - and you can also license Azure Stack for running many (most?) of Azure’s platform on-prem or self-hosted, I haven’t seen similar offerings from AWS or Google.