Hope Some Companies Like Virgin,Comcast etc Come to India and Offer Cheap Service Since these companies are known for High Speed Low Charges.
Comcast and Virgin - and indeed most US and UK ISPs all have Fair Usage limits. Some of the only truely unlimited ISPs are in continental Europe, specifically Scandinavia, as well as HKG, Japan, Singapore and South Korea. I've had extremely good broadband experiences in Finland, France, Japan and Hong Kong.