Isn't that after Windows was released?

And it's worth noting that Windows itself didn't really show up big until Windows 3.11 for Workgroups. Win 3.1 Workgroup was released in October, 1992, and the really stable version, 3.11, in November of 1993. That was still being rolled out up to several years later (enterprises are conservative). There was app development for it, yes, but Microsoft seemed to have already established its Office strategy. (Just checked: the initial announcement was in 1988.)

This is somewhat ancient history, and I rather dimly remember it (my primary platforms then were already largely server: Unix and VMS, plus others), but desktop was how I accessed the "real computer".