Oh no- if another ethnic group set up anything illegal in a mob controlled neighbourhood they too had to share some of their action

But ethnic groups tend to stick to their own- ie in London the Turks extort Turks, Chinese do Chinese, Viet's do Viet's

I personally know of one case where this notorious viet gangster who last I heard is doing life- went around to all the Vietnamese owned businesses to extort money

What's notable is that he did NOT enter any Chinese owned businesses

Purely because they probably would never have even heard of the guy. And that's the reason why the Italians didn't do it on a wide scale