Interesting facts about the Indian billionaires

Nice to know we have so many billionaires but wonder these billionaires earned their billions out of their own country men by importing foreign technologies and products and selling to Indian fellow men right from mobile handsets, to coffee, to vegetables. Why these so called Billionaires could produce car for the world, some thing like android to the world, a jet like Boeing to the world a train like GE , or medical equipment like GE. They made their millions selling clothes of foreign brands, mobiles of foreign brands and from researchers they have turned traders, and instead of making Indian coffee a or food a international brand they are franchising foreign coffee brands like starbucks etc . Its not about the money they made its about what revenue they generated for India as a country by carrying out research, production and branding of products made by India.