Who knew that the rise of Amazon would turn out so well for Walmart and Target? It was only a few years ago that both of those titanic big-box retailers were in peril, losing customers in droves to the e-commerce giant. But the past decade’s radical reshaping of how Americans shop, a change fueled by Amazon’s inexorable ascent, has paradoxically resulted in Walmart and Target—along with a few other big U.S. retailers—evolving to become stronger and more successful companies than ever. The massive shock of e-commerce’s encroachment, analysts agree, gave them the jolt they needed to reinvent themselves. Read more at Fortune.