[yohannparis]

I understand your point of view. But in cities of all sizes, it's easier to not have to do that. For example in NYC, a medium size city, you can easily go do your shopping in multiple places, and not at the same time.

[halflife]

Yes, and some people do that.

Some consumers go to specific stores to purchase specific qualities of brands.

But most do not, especially for convenience products. You get it where you can.