Shoppers with Internet access and a bargain-hunting impulse can find a universe of products at their fingertips. In this thought-provoking expos , Ariel Ezrachi and Maurice Stucke invite us to take a harder look at today's app-assisted paradise of digital shopping. While consumers reap many benefits from online purchasing, the sophisticated algorithms and data-crunching that make browsing so convenient are also changing the nature of market competition,...