Just read this article that mostly praises Walmarts efforts to grow, reshape and adapt to new markets, such as online sales. I mostly agree with the article, but what I find interesting is that Walmart, in its need to stay in the lead in retail and win the battle with Amazon, has a constant urge to appeal to the wealthier customers. That is something that makes sense for me, but Walmart can’t make the mistake to neglect the very thing that made it what it is today, and that is grocery sales and, in general, retail for lower-income consumers.
https://edition.cnn.com/2018/10/19/business/walmart-stores-grocery-pickup-amazon/index.html