“First, the Internet has driven the cost of discovery for products and services lower than ever. Unlike in the past, when companies needed to offer goods in retail stores or broadcast advertising in order to be visible to customers, today buyers can find whatever they’re looking for on Amazon or other online marketplaces like Alibaba, in app stores, or, when all else fails, by Googling. Because products and services that are already popular will almost always come up first in search results, companies with a competitive advantage can quickly grow to the point where the increasing returns of network effects produce a winner-take-most or winner-take-all market.”