That is the answer; in addition, many of the Indians that get here are the cream of the crop, and they know that back home they are just cogs on a wheel with over a BILLION other cogs. They are competitive at a young age because India has so many interchangeable cogs, and if you don’t stand out you are nothing. That also drives much of the cheating in academics there as well.
“many of the Indians that get here are the cream of the crop”
As poor as they are that tells you just how terrible those behind in India must be. I have never met a high quality Indian engineer or student in America. Not a single one and I have met thousands.