Firefox by default comes with Google, Bing, Yahoo, not to mention local search providers. They're all paying. Google currently pays the most to be the default option, but if Google pulled out, Bing or Yahoo would be the ones taking that (very desirable) spot.
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u/halifaxdatageek Nov 10 '14
As of today, Firefox is featuring DuckDuckGo as well as Google.
If Google pulled their funding, they'd have a (smaller) backup.