Okay. So let's time travel back to 1989 and answer this question:
"Why aren't there any chess grandmasters in India?"
Literacy rate then was very less and government was not supportive to sports Our economy wasn't as high as it is now and people couldn't travel to even other states, forget other countries.
Btw both formal training is a must along with natural intelligence to become a GM. My father from the 80's knew how to play and thought it to me when i was a kid. Now i have the opportunity to learn and expand my skills and reached around 1800 in a few years but still unable to beat my father who never played online chess or otb tourneys.
Because they are the least materialistic of all the nations.
Thats funny because they play the most materalistic chess. If they can take something, they will, wether it makes sense or not.