Thanks furio !
I think that also in the west there are more gangs to compete with right ?
Italian OC doesn't really compete with street gangs. I doubt Mexican gangs or the Crips would be involved in complex, white collar rackets like Construction, Garbage, Stock Fraud, or Racketeering.
As other people have said, there just aren't that many Italians out in the western US. Most people of Italian decsent have long since become Americanized and are usually long removed from their roots in the old country. They're more Olive Garden Italians who barely know anything about the old country, let alone know the old language or customs. It also seems like people on the east coast didnt assimilate as fast as they did elsewhere, simply because there were so many Italians.
The few Italian OC groups that were out West were fairly smalltime and have died out due to attrition like almost everywhere else except for NYC, Philly, etc.