What do you mean by the communist parts of India? Do you mean Nepal? WTF are you talking about? What you are saying has nothing to do with reality.
Most of the c-level Indians I know are from Hyderabad, including the former ceo of Microsoft India, the Eco of Adobe... Hyderabad is like Texas in India.
One is from chennai, the finance hub of India. The other is from almost the Nepal region but I've never heard of him.
There is a population of radicals in India - separists, communists, but they are separate from the western tied Indians. They are separate because they never were in the group that has close ties to the west, and they are a loud but weak minority.