Brad Wright has been frequently been associated with the comment that "Conservatives killed Stargate." In fact, I think this is a misquote. I can't find anywhere that he specifically said this, but I have found plenty of comments with resentment that people didn't come over to the new show, and some of 'em are of the sort that could be interpreted to mean that, whether he did or not.
SO whether he meant it or not (I personally don't think he did) it's become a matter of fannon that we pulled the plug on MY favorite franchise.
So did we? Maybe.
SG1, and to a lesser extent, SGA, were very popular with my crowd, but they never really migrated to SGU. I'd guess that's what he's talking about.
My own take on it is that we *did* have a say in its failure, but not in the way he thinks. Basically, SG1 was very gung-ho oooh-rah American USAF in space, covert war, America saving humanity, defeating false gods, and coming home in time to watch "Old School" on DVD. We LOVE that kind of stuff. I mean, we love it. You couldn't have stumbled on a better formula for 'our' type.
SGA lacked the 'right here, right now' aspect that really sold it to conservatives. Yeah, it took place in the here and now, but given the location and infrequent interactions, it may as well have taken place 300 years in the future. Thus you lost a lot of people who don't really like SF, but *do* like the USAF right there. (Didn't help any that the first season was pretty lame) Putting SGU on a starship a berjillion light years away isolated it further from 'right here, right now' which further alienated the audience
(Ironic, since SGU made a MUCH greater attempt to involve present-day earth than SGA ever did)
The reason Lost was so popular was that it basically didn't out itself as an SF show until the fourth season. By then, people were very invested, and many people I know who DO NOT like SF at all, continued to sit through it. If they'd thrown in time travel and hyperspheres in season 1, no one would have followed it.
So: Reason 1: Conservative people identified with the real world slice-of-life stuff, which was increasingly absent in subsequent Gate shows
Reason 2: The Ori arc really pissed off a lot of our people, who felt that it was a direct slam at Christianity. Personally, I liked it, but I, too, took it as a swipe at my faith. I'm a big boy, I can take it, but a lot of people didn't feel the need to, so they wandered off. As many of these people had never cottoned to SGA, they just drifted off.
(In fact, I know a couple people who *didn't know* there'd been another 'Gate show between SG1 and SGU, which shows how far they'd drifted)
Again, this is ironic: SGU did more positive stuff with religion (And very well, I might add) than the other two shows combined, but Conservatives never came back for that, so most of us never noticed.