alt Hacker NewsAgree. Hollywood and Wallstreet are great examples. Also the founders of Google and Facebook. It's no coincidence. Though I'm not sure this is nepotism as much as it is organized clan behavior.
I think Indians are even more so but there it's about caste and not just being Indian.
Humans are weird.
I can't speak for all South Asian Americans, but in my experience caste is not a significant player in our community in the US at least.
Alternatives like University Affiliation, Regional ties, Ethnic ties, Clan ties, and Workplace affiliation play a greater role due to the nature of South Asian immigration in the US (tends to be white collar professionals across all ethnic groups).
Treating South Asian Americans homogeneously will lead to the same mistakes like treating all Latinos homogeneously - plenty of South Asian heavy battleground counties like Loudoun County, Middlesex County, Williamson County, Kern County, San Joaquin County, etc have seen Ds margins drop significantly in the current election.
That said, we are a clannish bunch, and biradari (and every other South Asian language's equivalent of that word) is our guanxi.