That&#x27;s an unreasonably high estimate, and there is some data to support the idea that it&#x27;s unreasonable[1].<p>Microsoft has been losing, at most, a few billion[2] a year on Bing. Assuming they&#x27;ve spent $45B since 2009, that&#x27;s $6.4B per year spent on Bing. A net loss of $2B on Bing would mean Microsoft is making $4.4B per year, which isn&#x27;t in the ballpark.<p>1. <a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;chart-of-the-day-microsoft-online-operating-income-2012-10" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;chart-of-the-day-microsoft-on...</a><p>2. <a href="http:&#x2F;&#x2F;hal2020.com&#x2F;2013&#x2F;01&#x2F;18&#x2F;about-that-2b-annual-loss-from-microsofts-search-business&#x2F;" rel="nofollow">http:&#x2F;&#x2F;hal2020.com&#x2F;2013&#x2F;01&#x2F;18&#x2F;about-that-2b-annual-loss-from...</a>