The original Forbes story has more details: http://www.forbes.com/lists/2009/10/billionaires-2009-richest-people_Anil-Ambani_VX6G.html http://www.forbes.com/lis

The original Forbes story has more details: http://www.forbes.com/lists/2009/10/billionaires-2009-richest-people_Anil-Ambani_VX6G.html http://www.forbes.com/lists/2009/10/billionaires-2009-riches... In short, bad investment performance and scuttled merger plans.