Currently, Android phones are being activated at a rate of 160,000 handsets per day. This allows for continued widespread growth of Google branded apps like Maps, Google Search and others. Will Google be able to monetize all of these things into $10 billion of revenue every year? One thing that many have learned in the industry is not to doubt Google. After all, according to Statcounter, the company controls an amazing 98.29% of the mobile search market. Yahoo is second with an .81% share with Bing tied with "Others" for third with .46%. If Google can put up those kinds of numbers, who knows, maybe $10 billion in annual Android revenue will turn out to be too light.
source: TechCrunch, WSJ