Chris O said:
It wouldn't seem correct to treat the entirety of any medium from any other culture with similar prejudice. We don't generalize all of British TV or Canadian webcomics. We don't lump together all of French music or Latin American food.
Er, yes we do. I, for instance, am not a big fan of British TV. Some stands out enough to hook me (anything by Steven Moffat, some Monty Python), but everything seems just a little off, just a little awkward in its style. Every so often, there will be an American show/movie with the same kind of style (Surrogates) that I will similarly dislike.
As far as food, we
definitely lump that together, and often in incorrect ways. Chinese food to mean all Asian food. Mexican food, which is often more accurately described as Tex-Mex (but then most Americans consider all Latin American food to be "Mexican").
Right or wrong, we generalize everything from a culture. And this is useful (one word: Bollywood). It tells us the general style and themes to expect. Sure, more information is often needed (British comedy, German police procedural, action anime), but in the same way all genres need additional qualifiers (action comedy, romantic comedy, dramedy).
But there's nothing explicitly preventing Americans from making a British-style comedy, just like there's nothing preventing city dwellers from writing spaghetti westerns. The importance, as you point out, is whether it's in the style, not where it was produced (although, Americans have botched a lot of "American remakes" of popular entertainment [http://www.youtube.com/watch?v=N0onquIv89g] from elsewhere).