[TheBeardKing]

The author was using it to illustrate how broken the market currently is:

>Of note, there are more than 10 Walmart stores for every Whole Foods store. The opposite is true for medical care as most physicians and hospitals strive for high standards and very few concentrate on lowering costs.

That puts things in perspective for a layperson - if 9/10 grocery stores were Whole Foods, the 1/10 Walmart would not be nearly enough to serve the poor population.