= you can't
Two examples does NOT constitute "most."
So I shall go on posting the CEO's, and perhaps, the franchise owners of the most popular Italian/Pizza chains in America? Do you really want to get hung up on Americanized Italian food? Do all of your hopes rest on that of Italian/Pizza chains in America?
http://www.huffingtonpost.com/2012/04/17/burrito-chains-mexican-food_n_1428923.html
"But these companies, the biggest and most lucrative chains in the U.S. Mexican food business, are not owned or started by Mexicans, but by white Americans -- a fact which some find troubling."
"What has happened with Mexican food being taken over by non-Mexicans isn't surprising at all. Most of the big Italian food chains aren't owned by Italians either," Mariani noted. "Olive Garden really isn't Italian food -- it's a Midwesterner's idea of what Italian food is."