My recollection (NE USA) was that crappy monitors were common.
I.T. was just less well funded in general back then, I think, and hardware was relatively more expensive.
There was also just much less understanding of "hey, developers need somewhat beefy setups"
I remember at my first professional job, I had a 100mhz or 120mhz Pentium I. The receptionist had a 133mhz Pentium I with, I think, more RAM as well. (I remember because it pissed me off...)
There were also a lot more in-house development jobs. Some small non-tech company would grow to the point that the underfunded IT guy was writing all these little scripts and VB apps. And then he'd finally fight and fight and the company would hire a second person as programmer, so the IT guy could focus on fixing people's printers and reinstalling Windows, and management would not understand why they'd need to spend an extra $2000 buying a nice desktop and monitor for the $40K/year programmer they just begrudgingly hired for their company where the average salary was $27K/year.
Shit, even in the late 2010s, in a lot of places would still look at you like your hair was on fire if you asked for a second monitor... there was a stretch there where I'd just bring one of my own... also I remember I had a job where I had a second company-provided monitor and they took it away because they were hiring more engineers and it wasn't "fair" for me to have 2 because they didn't have the budget to give everybody 2 lmao