The Southern Group is trying to cover all their territory let alone the North Side.
The Chicagoland territory is huge.
The Southern Group has very little happening on the North side.
There is some bookmaking and Poker machines in Melrose Park which was traditionally covered by the Cicero crew who is the Dominant. Their partner is the 26th St Crew.

The Northern Group receives nothing from the Southern Group.
DiFronzo does not want to go to jail over Poker machines. That was the deal. The Southern Group led by Cicero can do whatever they please with the street Rackets.
They have to worry about the South Side before they can think about the North Side with any further expansion.

Cicero is lacking some of the Political Clout of DiFronzo.