Why does your IT department MDM devices but not have backups and/or why is any substantial amount of data not synced to servers, in repos, etc? Given how fast

Why does your IT department MDM devices but not have backups and/or why is any substantial amount of data not synced to servers, in repos, etc? Given how fast networks and storage and processors are these days - if something takes more than an hour or two of diagnostic time and rarely happens, you just nuke the machine and re-image.