I have to respectfully disagree with that. Mark my words; Cosa Nostra is going to have a big resurgence in the next 10-15 years. It may be the biggest time for organized crime since prohibition. Like the prohibition era, there are going to be alot of non-mafia gangs and factions to compete with.

I dont know how well Cosa Nostra will compete this time around, its a different dynamic but they say a rising tide lifts all boats so its very likely that you will see Cosa Nostra grow in numbers, wealth, and power.