We don't have ketchup-flavored chips in my neck ofnthe woods either. The U.S. actually gets fewer flavor choices than most of the world despite how it's our companies that are exporting a lot of this junk food. One good example is Coca-Cola which of course is an American company, but popular products like Coca Cola Rasberry and Coca Cola Plus were never sold in the U.S.
For me, this choice boils down to Sour Cream & Onion or Go Hungry. I'll gladly take the Sour Cream & Onion.