the whole "not being an automatable remote sql injection away from everything" quality of physical objects grants a filing cabinet a tremendous amount of inherent security compared to anything digital.
Not sure if they're still doing this, but as of a few years ago, the IRS was still using literal trucks full of tapes to transport data to backup facilities. Tapes are good for this because they don't degrade as quickly as hard drives, so if you're actually looking to do archival storage that will outlast the cloud provider of the decade, they are surprisingly practical.
As long as the janitors aren't using electric floor buffers, like NASA used to do, the tapes will last forever. However NASA ended up losing the data (from 1960s space missions) on the bottom 2 rows of tapes. It took a couple decades though.
Friction and delay have always been aspects of security.