That said, starting in the early 1990s is missing the whole first half of the story, no? Searching Google Books with a 1980-1990 date range for things like "3d graphics" "art" or "3d graphics" "special effects" yields a lot of primary sources that indicate that creative applications were driving demand for chips and workstations that focused on graphics. For instance this is from a trade journal for TV producers in 1987: "Perhaps the greatest dilemma facing the industrial producer today is what to do about digital graphics... because special effects, 2d painting, and 3d animation all rely on basically the same kind of hardware, it should be possible to design a 'graphics computer' that can handle several different kinds of functions." [https://www.google.com/books/edition/E_ITV/0JRYAAAAYAAJ?hl=e...]
It's not hard to find more examples like this from the 1985-1989 period.