The definition of power tends to differ by definition. Southside have become majority black with modest amount of Latinos then everybody else in different sections, while Westside become fairly balance of Blacks & Latinos then the rest is mixed ( not entirely accurate about this part).

Many times you'll hear that the Outfit had a monopoly after defeating the North side Mob but even that wasn't true. Not to take away or downsize their rackets & political connections; They was the major syndicate in the city in regards to diverse activities and especially their milk & honey. Now for certain activities they had minor involvement is where the other Syndicates and groups come into play.

Chicago had a hundred times the gangs back in the 1920s but smaller membership ( 1,200+ Gangs, 10,000+ Population). Those range from racketeering groups ( Bootlegging) to social clubs ( Street Gangs/ Greasers). Over time the number of gangs shrunk but the population expanded ( Today : 59 Gangs , 70,000+ Population). The combination of economy, housing discrimination , drug trade, corruption, and war on gangs shaped the gangland to the point presently. Regardless of the time period, Gangs & Syndicates contributed to the violence that plagues Chicago.

I agree on the competition but only in regards to certain activities. The Outfit still have a semi monopoly on specific gambling & juice loans rackets in the city. Everything else come second per say.