PC gamers in the mid-to-late 90s apparently started turning up their noses at turn-based strategy games in favour of the new hotness of the Command & Conquers and Warcrafts of the day
A review of X-Com Apocalypse from the time:
"to be honest, the new real-time combat is so good I really can't see why anyone would want to play the much slower (and often infuriating) turn-based tactical game"
:kitty-cri-screm:
spoiler
That's like preferring Diablo over Fallout
Such a top-tier series, somebody needs to come along and copy the formula but with bigger battles and better AI. Stuff like Ultimate General and Grand Tactician (both Civil War games) are what I'm talking about.