Seems like winzip and pkzip had overlapping time frames for the same function, so it basically just came down to if people were more into windows or DOS. I was using mainly DOS for stuff like that through the mid 90s (distinctly remember getting Doom 2 from a friend on about a dozen floppies that I used pk(un)zip to install), even if I was using windows alongside it. In fact I remember being vaguely annoyed when I got a computer that had windows that ran DOS, rather than the other way around (maybe it was XP?).
Seems like winzip and pkzip had overlapping time frames for the same function, so it basically just came down to if people were more into windows or DOS. I was using mainly DOS for stuff like that through the mid 90s (distinctly remember getting Doom 2 from a friend on about a dozen floppies that I used pk(un)zip to install), even if I was using windows alongside it. In fact I remember being vaguely annoyed when I got a computer that had windows that ran DOS, rather than the other way around (maybe it was XP?).