Not at all, because attributing the commercial failure of Firefly to the subject matter conflates a couple of different issues. In fact that show's ratings were pretty much in line with those of almost any space show in this country that doesn't have "Star Trek" in the title; this is why basic cable is the last refuge of such material. It would be more direct and accurate to say that Firefly bombed because it was a broadcast network series set in the future on a spaceship.
ARGH!
...I am being forced to agree with
Dennis.
Here's
a handy-dandy chart that explains what is going on and by extension, why
Firefly failed. Americans are watching more TV than ever, as it turns out. But the proliferation of cable channels is stealing away far more eyeballs than there are eyeballs to go around.
Basic and - especially - premium cable outlets get part of their revenues from subscriptions, which means funky shows with small audiences like
Mad Men and
Breaking Bad can survive in that environment.
Dexter is Showtime's big hit show with 2M viewers, numbers that would probably get it cancelled even on a joke network like the CW or NBC.
But networks, which are solely ad-supported (with maybe a few other trivial revenue streams) are being forced to make bland shows in mass-appeal genres in the desperate hope of grabbing widespread appeal because niche numbers just don't work for them. And lo and behold, the upcoming pilot season is about 50% cop shows. That's not because there's really that much demand for cop shows, but because networks are scared to take any risks, and would prefer to duke it out in a grossly overcrowded market that they at least understand.
Which means,
Firefly would have had a better chance of survival on FX than on FOX. And FX has no problem with shows about rebels - its audience really goes for that stuff. A lot of audiences do, and shows about cops who are rebels, doctors who are rebels, lawyers who are rebels, etc., are all over the place. The bigger hurdle would be getting them to accept a show about rebels
in outer space rather than the real-world shows about corrupt cops or psycho bikers that they're used to seeing and can relate to.