Because the advertising industry pays browser makers: http://www.investopedia.com/articles/investing/041315/how-mozilla-firefox-and-google-chrome-make-money.as

Because the advertising industry pays browser makers: http://www.investopedia.com/articles/investing/041315/how-mozilla-firefox-and-google-chrome-make-money.asp http://www.investopedia.com/articles/investing/041315/how-mo... http://www.bloomberg.com/news/articles/2016-01-22/google-paid-apple-1-billion-to-keep-search-bar-on-iphone http://www.bloomberg.com/news/articles/2016-01-22/google-pai...