A customer purchases groceries at a Walmart Inc. store in Burbank, California, U.S. (Photographer: Patrick T. Fallon/Bloomberg)

Walmart Is Beating Amazon in a Business Worth $35 Billion

(Bloomberg Opinion) -- On a number of fronts in online shopping, Amazon.com Inc.’s strategy is clear and brutally effective. It is gunning for more dollars in high-margin categories such as home go...