Why Google’s Search Dominance Is Eroding (GOOG)

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Thanks to a partnership between Mozilla and Yahoo, Google has seen the largest drop in its share of the search market since 2009, reports Bloomberg—and thanks to rising tensions with Apple, further decline may be imminent. Mozilla’s Firefox web browser has historically come bundled with Google as its default search engine, but a five-year deal signed with Yahoo in November 2014 has seen Firefox automatically opting for the rival search engine instead. The result? Google’s U.S. market share has slipped from 79.3% to 75.2%—with Yahoo up from 7.4% to 10.4%.