VGA was still not common until years after it was introduced, though. My dad wrote and sold office software in that timeframe and most of his clients were still using machines without VGA and monochrome only.
I remember PC users still showing me EGA games into 89 because if how ridiculous it seemed to me that they paid silly money for a machine like that.
The PCs VGA hi-res graphics mode was 640x480 in 16 colors/262144 palette (non-interlaced!)
The PCs VGA text mode was 720x400 in 16 colors (non-interlaced) and very fast/efficient since a whole screen took up just 80x25x2 bytes - 4 KB.
And, if you need to work 8+ hours/day you really prefer flicker-free efficient display modes.
I may be wrong, but these are also higher resolutions that the first Amigas.
VGA was introduced with IBMs PS/2 line in 1987 and 1024x768x16 color SVGA was slowly becoming the standard on the PC ca. 1989/90.