Late 80s computers were fairly common in Ireland, 386's and Mac's, although as you say mostly non-Dos, Spectrum, Commodore 64, Amiga, Atari and some other exotics.

We had a computer lab in my very run down school that has Macs and Apple IIs. My family were working class, if you had an interest there was a network of computer enthusiasts who would happy swap stuff, get you hardware etc. We bought a second hand 386 from somewhere, then fucked it up trying to add more memory I think. I was only a kid, but my dad saw me self learning BASIC and would encourage that sort of thing.

If this was happening in 80s Ireland I'd be surprised to learn they were rare in other countries, we weren't exactly doing well at that point.