Let's see: The old files are still held on the nebulous "cloud platform". If they are on the same media then they are equally vulnerable to attack or or loss; If they are on separate media then welcome to "overly complicated backups by another name".
The whole point of off-site backup is that you have a recovery point even if the whole datacenter is destroyed.
Yes, I remember file versioning (I too an an old VAX/VMS alumni), but it wasn't always as useful as you wanted, wasn't always appropriate and burned through space.
Biting the hand that feeds IT
