Dana Mattioli: I think the future of Amazon is more Amazon, but it really hinges on whether the regulators here get their way. In her new book, “The Everything War,” The Wall Street Journal’s Danioli documents the tactics she says have enabled Amazon to dominate. It chronicles pervasive situations where different teams at Amazon are helping themselves to data from sellers on the site, or others that they could then reverse-engineer their own best hits for Amazon’s brands.