Fortunately I avoided that DOS era. Because I had the fortune to play games on this, though I never owned one.
It provided the perfect environment for computer games, something the Japanese machines were not ready for.
Lets compare the two best computers of that era: Sharp X68000 and Amiga 2000.
Amiga 2000 had much better value for money than a Sharp X68000.
Sharp had 2500$ launch price. Amiga 2000 had 1300$. With that same money you could add a video card and an accelerator card on the Amiga and you had a beast machine.
Sharp was sprite based since it was arcade focused. Hence why it was never exported to the West. Its focus was mainly arcade games, just like the PC Engine and Neo Geo.
As an arcade gaming machine Sharp was the best but it lacked as a general purpose gaming and computer.
Amiga was for general purpose since it had copper/blitter and was fully programmable.For that reason Amiga's gfx chipset was years ahead of the Sharp. One reason you hardly see games like 3d flight sim/racing or first person rpgs on Sharp, while Amiga had dozens (F18, Falcon, gunship, indy 500, lotus turbo challenge etc). Also parallax scrolling was added only to a few Sharp games because it was difficult to materialize, while on the Amiga it was free due to blitter.
It also did lack in sound featuring just FM Synthesis and 4-bit PCM.
Sharp's OS was an MS-DOS clone. Amiga's OS was light years ahead.
West would certainly benefit with the advent of Japanese computers, but things were already set in motion with the multimedia revolution of Commodore and Atari computers. Microsoft realized it and stole many ideas from them. But even at copying they suck...