[Warning: there are some TV Tropes links in here.]
I have confessed to contributing to self-fulfilling prophecies: if you do not commit to something/one because s/he/it may not be around for long, s/he/it probably will not be around for long. So how do you invest yourself in something when the producers have a left a wake of unfinished and canceled projects?
The Chris Carter Effect is the hesitancy to start watching a show (or whatever) because you cannot reasonably expect (1) the creators to tie up their loose threads. The second season of Lost is an example of this, when you realized at some point that the writers were making it up as they went along rather than revealing some grand mystery they had conceived. The second season of Heroes is not an example of this, when you realized at some point that it was not very good anymore. See also: why I never started The Wheel of Time.
Joss Whedon is a creator with a reputation driven by several cancellations in quick succession. I am not sure how fair that is, with Buffy getting seven seasons and Angel five, but then Buffy had to switch networks to stay alive and Angel was canceled during the one season where they finally felt comfortable writing a multi-season story arc. And then Firefly and Dollhouse arrived and left quickly. And during the mass cancellation, Joss Whedon was working with three shows at once, plus a comic book or two, plus a movie script or three, so he was delegating a lot and some of those delegations went better than others and okay, that might be a fair reputation. At least he is turning down new projects while Disney has his contract.
Very few Western MMOs have shut down. They may have minimal support, but as long as someone is willing to log in, someone will keep the servers plugged in. Turbine keeps tiny Asheron’s Call 1 going (and even rezzed Asheron’s Call 2), and Anarchy Online is still online. Back in its first telling, A Tale in the Desert worked out how few (under 1000) paying players it needed to stay alive. Brian Green has kept Meridian 59 alive even when revenue is less than the cost of electricity and bandwidth.
After Auto Assault, City of Heroes, Dungeon Runners, and Tabula Rasa, how much confidence do you have that NCsoft will let a game survive without being a hit?
English (language) spelling conventions are kind of horrible at times. We spell “canceled” with one L on this side of the Atlantic and they use two on the other, but we still use two for “cancellation.”