Comment by johnsmith21006

Look at what happened when Firefox switched default search. The default search on Firefox is now worth far less than it was before as they lost huge amounts of browser market share.

Bing is down to 2.5% market share , global and all platforms.

http://gs.statcounter.com/search-engine-market-share Search engine market share Worldwide | StatCounter Global Stats

Down to 6.5% in the US for all platforms. But is also declining.

http://gs.statcounter.com/search-engine-market-share/all/uni...

Plus Bing having so little share and revs to invest it has really fallen behind Google in particular in Mobile.