I feel it's common in most cultures. As a former Rhodesian and South African, it's seen as fair game due to viewing things as a 'rigged system'. I always used to think we were far more corrupt and nepotistic than the rest of the world due to the insane scale of said corruption and nepotism in both the private and public sector, and yet when I came to the UK it's still a pretty universal thing, albeit on a lower magnitude and far more covered up.