Sure, but Americans have been doing this for hundreds of years through exclusionary hobbies like golf, fantasy football, and a hundred other things. That's just how social groups work. They are often cliquey and exclusionary.

That's why I think it's weird to only target Indians in this regard. They are building an in-group just like everyone else; the difference is that OP seems to have little experience not being part of the in-group.

That's true and they have.

But that doesn't make it okay for others to do.

We should be working to decrease it in all exclusionary groups by working to make them more inclusionary. That means intentionally rotating comfort zones.

And it is a historically seductive siren call that once an immigrant community in any country attains some power, they use it to ramp up exclusion and cronyism.

In all fairness, to protect their tenuous grasp on that power from external racism, but it also succumbs to use for less noble, more human ends. E.g. getting ones friend hired.

I'm glad that you're admitting this is happening.

Other groups doing this too doesn't make it okay. Nobody should be forming exclusionary groups where all the shots are called and business decisions are made.