That's not really true. Even in the 90s there were large libraries of 3rd party widgets available for Windows that could be drag-and-dropped into VB, Delphi, and even the Visual C++ UI editor. For tasks running the gamut from 3D graphics to interfacing with custom hardware.
The web was a big step backwards for UI design. It was a 30 year detour whose results still suck compared to pre-web UIs.