Your location of Illinois may bring some bias eastsider, though I do agree with you. They did control all families west of the Mississippi and I think stronger control of unions vs. New York
"Control" may be too strong a word. The Outfit had varying degrees of influence over the families west of Chicago. And one of the main reasons the Genovese family has always been considered the #1 family in the country was/is because of their control of labor unions and influence in legitimate industries. More so than any other family.