I came across a decent journalism by "The Swaddle" recently, they discuss how upper caste social capital translates to merit in multiple arenas of life in India. They looked into IITs and made the following piece. https://theswaddle.com/the-deserving-and-the-damned/

This also sheds some light into state of startups and people behind it, as more than 60% Indian unicorns has at-least one of their founder from an IIT. https://restofworld.org/2023/iit-graduates-dominate-tech/