There are four main reasons I feel this way.
1) The country has 1.3 billion people. You'd think a few of such a large number of people would go into CAG/MAME gaming.
2) The country has 125 million English speakers. Unlike China, and Japan English is not an obstacle for a large number of Indians. So submitting a score isn't really that big of an issue for 125 million people.
3) World records actually have significance in India. Guinness gets an unusually high number of record submissions from India.
4) A large number of Indians are computer savy. Silicon valley's number one import of workers is from India.
So it's beyond me why I can't think of a single Indian CAG/MAME gamer.