...prevelent and popular
Not for "OK Computer"! Maybe for the other albums listed, though.
The Spectrum was launched in 1982, and by the time 1997 came around, it had had it's last gasp, having been sold off to Amstrad, and milked to death way before then,
Reading the Wikipedia article, it would appear that the last model launched was in 1987, and the line finally killed off in 1990.
Thinking back, that did seem like a short life, but the late 80s and 90s belonged to the games console, and the home PC market was left to the C64 and derivatives (this probably had the longest product life of all home PCs), the Amiga and Atari ST, and the more affordable IBM PC clones.