100% agreed, I worked for a big 3 Letter Corp and heard manager speaking in his native language of the State (same as the company was located) to another member of team from same State, saying please work a little and i will promote you as a manager ,who will i do it for, if not for you. In the meantime, we were working our ass off and got nothing.

Its there for real, you can easily see it - If you join a multinational company and find a team with more than 50% of people are from same State - There is something going on. First thing that should be banned in india is attaching Caste as the Last Name.