For users that can't grasp that minimized windows become icons on their desktop or that directories can themselves contain directories, having everything switch to a new workspace will look to them identically to either one of an "I just broke it" or "It just deleted/erased/destroyed everything I was working on" result (and which result occurs depends upon whether they blame themselves or the machine as the cause).
Sadly, the result is that us advanced users, who do understand workspaces and can make productive use of them, were left without them being available until win10.
And don't forget MDI, best shown by the Windows 3.1 Program Manager: a MDI program would have several inner windows within it, and each of these inner windows could be resized, moved, minimized or maximized, all within the boundaries of the main program window.
http://toastytech.com/guis/ndw.html
that provided, even on Windows 3.1/3.11 roughly the same UI of the Mac OS of the time, very similar, for some aspects, to the later Windows 9x one.
PC Tools for Windows was another lternative shell. Finicky and prone to crashes, but better UI design than the Norton Desktop.
Windows 95 obsoleted them both.
https://en.wikipedia.org/wiki/TabWorks
http://www.supervinx.com/OnlineMuseum/Compaq/Contura/Aero%20...
I think it like a poor's man alternative to workspaces.