Severely injured in a 1925 assassination attempt by the North Side Gang, the shaken Torrio turned over his business to Capone and returned to Italy. Capone was notorious during the Prohibition Era for his control of large portions of the Chicago underworld, which provided the Outfit with an estimated US $100 million per year in revenue. This wealth was generated through all manner of illegal enterprises, such as gambling and prostitution, although the largest moneymaker was the sale of liquor. In those days Capone had the habit of "interviewing" new prostitutes for his club himself.
Demand was met by a transportation network that moved smuggled liquor from the rum-runners of the East Coast and The Purple Gang in Detroit and local production in the form of Midwestern moonshine operations and illegal breweries. With the funds generated by his bootlegging operation, Capone's grip on the political and law-enforcement establishments in Chicago grew stronger.
Through this organized corruption, which included the bribing of Mayor of Chicago William "Big Bill" Hale Thompson, Capone's gang operated largely free from legal intrusion, operating casinos and speakeasies throughout Chicago. Wealth also permitted Capone to indulge in a luxurious lifestyle of custom suits, cigars, gourmet food and drink (his preferred liquor was Templeton Rye from Iowa), jewelry, and female companionship. He garnered media attention, to which his favorite responses were "I am just a businessman, giving the people what they want" and "All I do is satisfy a public demand." Capone had become a celebrity.