The ‘mob’ has been around for a 100+ years longer than the other groups you mentioned. They will not start anything they can not win and it will not be pretty. They are also a lot more subtle than a street war.
I think conditions have been bad there much longer than 100 years and long before there was an international commerce in illegal drugs. I remember reading something from the early 1800s by someone from the town of Tropea in Calabria complaining about the horrible conditions there then—I forget if Mafia-type organizations were part of the problem but I wouldn’t be surprised.