I'd suggest that restaurants 'were' a intelligent way at one time. First of all American restaurants are not cheap overseas, I'd guess more than 25% higher than the states.
Secondly, because the American chains have to tweek their menu's for the local tastes, it doesn't take long until they are copied by local chains.
KLG in china right now has signage the looks exactly like KFC with the exception of the Colonel (they use a Happy Chicken instead) and their food is the equivalent at a lower cost.
US as a nation has about twice the advertising expenditures compared to China.