Drawings of the globe used to, quite frequently, show the Americas.
Now there's a map printing shop idea, centering the map on any country you choose.
http://img.memecdn.com/australian-world-map_o_1081710.jpg
(I quite like that map, actually.)
But GMT is still Eurocentric and unimportant from the perspective of an individual looking at a map, I do wonder if that will ever change?
(And if you're into science fiction, you've likely internalized the American view of Earth from space without even realizing it.)
I'm not passing judgement here - just saying that cultural influence isn't equal.