Wonder if there are economies of scale storing multiple users' backups that may partially contain a lot of the same data. If 10000 separate users' backups contain the same 10GB app binary...
Yeah, I mean Time Machine backs up the entire OS as well.
I would have no problem if Time Machine separated out OS and known signed application packages and basically just stored pointers to standard versions of them, as long as all that detection is done client-side.
There's no reason the backup would need to store anything but the list of those files (that list being encrypted), and then everything unique to me -- my configurations, my files, etc.
