<i>Walmart&#x27;s sin here isn&#x27;t lack of policy&#x2F;procedure&#x2F;strategy. It&#x27;s serving poor customers.</i><p>That&#x27;s the thing about Walmart -- they don&#x27;t just sell to poor customers.  What they literally do -- buy selling products that might have the lowest price point, but also by far the lowest value; and hence are generally the worst investment in the long run -- is <i>sell poverty</i> itself.