We are probably fortunate, we live 5 minutes from one Costco, 6 minutes from a second one and 17 minutes from a third. My wife visits Costco every week, Walmart every week often on different days, etc. We buy from Amazon online frequently. Sometimes an item is cheaper at one place than another, comparison shopping, sometimes cheaper online, sometimes cheaper in the store.

It all works, though the article mentions public stores and references military commissaries as an example. We can shop at the commissary if we want. We don't because the other stores I mentioned above cover all our needs better at a better price point.

I do not think the article's author understands the subject matter as well as they think they do and with the many political references to the current New York mayor; it may just be disguised political messaging article.