What I meant is that most people do admit to shopping at Walmart with no embarrassment. Not the same for buying CCC. They still buy it but they know they shouldn't. Shopping at Walmart isn't like that.

Walmart is pretty much the only big discount store available to many people regardless of their income level unless they have personal shoppers picking stuff up for them. I have a nearby Walmart; the nearest Costco is an hour away and it's a different type of product mix anyway. I don't love shopping at Walmart for a number of reasons but it's convenient for many purposes.