It's easy for a person who doesn't care about a particular show to not care much about why it was canceled. For those who do care, we looked for the reasons. Having talked with the cast and participating in many other places on the Internet furnishing info, I can say I honestly believe there were "those" who wanted to see the show fail/removed.
http://en.wikipedia.org/wiki/Firefly...vision_series)
Scroll down to "Cancelation".
Be sure to click on footnote #5 for information that contradicts your insinuation that the show didn't have much of an audience.
Speaking of cancelation, I might point out that Fox almost canceled 24, which, for this year, is the most nominated for Emmy awards. So, whether or not Fox cancels something is no indication, apparently, of its quality. It's all about making money fast. If it isn't made fast enough, then don't "get behind" the series and push it, NO, by all means, just cancel it! One other factor (my own opinion that I've not seen written anwyhere else) that may have added to the decision to cancel the series is the onslaught of visual pablum known to all the TV masses as "reality programming" which people hungered for in droves and which the networks could produce for "pennies" compared to a series employing actual known actors. Why spend a million an episode when you could spend 100K per episode and make more money? Dumbass people would watch ANYTHING in the "reality" genre.
And, the Lucas factor in the whole thing? I tend to believe where there is smoke, there's quite a liklihood of fire. After reading an excerpt of Lucas' VERY unprofessional comments about Joss' ability, I would catagorize Lucas as very likely to have had a hand in seeing the series fail. After all, IF a person is talentless and you have no worries BECAUSE he is talentless, you don't even bother your busy schedule to spend time discussing it. But, you have to wonder why someone goes out of his way to practice a bit of character assassination for a person who "competes" directly in your "arena". I think it's because he knows Joss has something that people like and he worried about his "hold" on the space genre being challenged.