A Very Jewel Christmas wrote:
DS9 ran in syndication where it could last that long and VOY ran on a network so crappy it made Homeboys in Outer Space. Both in a time when cable tv wasn't really a problem yet and in VOY's case the company that owned it also owned the channel.
Also despite running twice as long, neither had the impact the original did and both are largely unknown to non-Trek fans.
I think it's pretty harsh to judge their impact against the original Star Trek series which is
the most widely known sci-fi show of all-time across the world. If DS9 had more impact than that it'd be an act of the Prophets.