Remember, though, that Disney is the market leader in animated movies, and so it's understandable that rival animation studios follow trends set by the Disney Animated Canon (including Disneyfication). Some people go so far as to believe that Disney invented animation, which isn't true either: Walt was still in junior high school when Gertie the Dinosaur was released (though he did release the first feature-length hand-drawn cartoon, namely Snow White and the Seven Dwarfs). Who (aside from fans of animation) wants to tell these people that there's more than one animation studio out there? Small Reference Pools might play a role here, as well. This is possibly a side effect of the Animation Age Ghetto, as people are led to believe that not only are all cartoons for kids, but they're all made by the same kid-friendly company.
Sadly, many people in Real Life believe that, if it's a quality animated feature film, it was made by Disney. Wait, what do you mean that last one doesn't belong? It's not Disney? Don't be ridiculous, only Disney could produce animation of that quality! Such wonderful movies to be found in it: Snow White and the Seven Dwarfs, Beauty and the Beast, The Lion King, The Swan Princess.
Ralph Bakshi, in the notes for the DVD release of American PopĪh, the Disney Animated Canon.