When Amazon launched a funky membership program called Amazon Prime in 2005, Walmart boasted larger profits than Amazon had revenue. Fifteen years later, though, Prime is the key reason for Amazon’s dominance over Walmart in online sales.
That pressure has pushed the traditional retailer to burn tens of billions of dollars to fight back while its executives have cycled through various stages of reaction to Prime’s ascent: denial, followed by meek competition, followed by a reversal that seemed to signal Walmart wanted to stick to a free, no-membership strategy.. . . more