huh?
You know, that's what FILEservers are for! No data; zero, zip, nada, should be stored on a users system. OS only.
Yes, they're expected -by policy- to do that. They often don't. They usually get religion after an incident that threatens or loses their data.
Users are users. The only place where I rarely saw data lost was a company I did a contract for, who automatically archived the user's data periodically, with no action from the user required.