Aren't supermarkets in the US already subdivided anyway? In the UK we have at least three tiers of supermarket. You're not going to see the riff raff in Waitr

Aren't supermarkets in the US already subdivided anyway? In the UK we have at least three tiers of supermarket. You're not going to see the riff raff in Waitrose because they can't afford it. "Above" that you have more esoteric health shops. You might see middle-class folk who are cost-conscious (waves) in the low end supermarkets. Pound shops and discount retailers tend to have a specific style - music, decor etc - that reinforce the fact that they're 'poor people stores'. Sure, theoretically you could go and buy your groceries in the expensive stores if you're skint, but in practice no-one actually does that.