Curry main advantage is that they are shameless, and I do not meant it jokingly.
With no shame you can achieve anything, even if you suck at everything
Extremely low inhib
No shame whatsoever
When they come over to work as a expat they do not come over alone, but bring their whole family and relatives (I've seen this), lots of which go on welfare.
Then they will take up housing and other public services. Yes, they are poor, but they are still taking resources.
The typical curry tactic to gain power is to play the puppy eyes role, gain sympathy, then only hire your own kind (preferrably lower caste).
This tactic let's the curry manager feel good about himself because only lower caste jeets will tolerance his BS and obey him, and it kicks out natives from jobs at the same time.