Amazon same-day delivery: How the e-commerce giant will destroy local retail.:

Why would Amazon give up its precious tax advantage? This week, as part of an excellent investigative series on the firm, the Financial Times’ Barney Jopson reports that Amazon’s tax capitulation is part of a major shift in the company’s operations. Amazon’s grand strategy has been to set up distribution centers in faraway, low-cost states and then ship stuff to people in more populous, high-cost states. When I order stuff from Amazon, for instance, it gets shipped to California from one of the company’s massive warehouses in Kentucky or Nevada.

But now Amazon has a new game. Now that it has agreed to collect sales taxes, the company can legally set up warehouses right inside some of the largest metropolitan areas in the nation. Why would it want to do that? Because Amazon’s new goal is to get stuff to you immediately—as soon as a few hours after you hit Buy. (Disclosure: Slate participates in Amazon Associates, an “affiliate” advertising plan that rewards websites for sending customers to the online store. This means that if you click on an Amazon link from Slate—including a link in this story—and you end up buying something, Amazon will send Slate a percentage of your final purchase price.)