With over 3,800 stores and more than $110 billion in revenue, Kroger is the second-largest retailer in the U.S., behind Walmart. Normally, a company of this size would not fret about Whole Foods’ relatively paltry 460 stores being sold off to a company whose bricks-and-mortar footprint consists mostly of a few bookshops. But because that buyer is Amazon, some are expecting Kroger to be worried. [More]