I disagree, I think if it's good it will spread. If there's one thing people will go to a great deal of trouble for, it's good food.

Japanese food is everywhere, Chinese food is everywhere, Indian food is everywhere. Belgian food isn't everywhere, Australian food isn't everywhere, Mexican food isn't everywhere. (I mean actual Mexican from the interior, not Tex-Mex - which does have an overseas presence). The only places you'll see these is in expatriate communities.