NeXTSTEP utilized "Display PostScript"[0] for both printing and display. Apple's Cocoa can trace direct ancestry to frameworks originating in NeXTSTEP[1]. I am pretty sure this included use of PostScript in the display/printing frameworks as well, but do not have references to support that memory.
So, while '.ps' files are not often seen in the wild, as you say, a strong case can be made that PostScript was once (if not currently) widely used.
> in academia. Not outside.
NeXTSTEP utilized "Display PostScript"[0] for both printing and display. Apple's Cocoa can trace direct ancestry to frameworks originating in NeXTSTEP[1]. I am pretty sure this included use of PostScript in the display/printing frameworks as well, but do not have references to support that memory.
So, while '.ps' files are not often seen in the wild, as you say, a strong case can be made that PostScript was once (if not currently) widely used.
0 - https://www.oreilly.com/library/view/learning-cocoa-with/059...
1 - https://arstechnica.com/gadgets/2012/12/the-legacy-of-next-l...