In spite of slipping, living standards and available resources, I believe that Americans have been more prejudiced, due to their role as preeminent superpower, world policeman, and cultural epicenter. You know uniquely-American foods. We don't know uniquely-Canadian-foods, popularly. Noone is going to Canada, to pursue celebrity status.
But, all America has to offer is image.
More-practically speaking, I believe that acquisitive people will exploit whatever country gives them a competitive edge. Export businesses, entrepreneurial pioneers, and banking aficionados are cosmopolitan.
It's a question of work opportunities, and, unless you have a have job offer, on paper (!), in show business, that mystique is literally worthless. Americanism is like the rhinestone, to the actual cowboy. It is the vacation spot, with a service sector economy, that provides nothing, except for a nice view. You can spend money, here, for so long as we can import things, like the leisure cities of the ancient world.