(For more on their legends/stories, you can Google)
Organised crime groups are efficient in commiting crimes, where they earn large stake of money at one go, which is why they don't go for petty crimes which have less earning potential. They focus on products where they can setup a business and do it on a regular basis. Barrier to entry is the police force of a particular area and the scope of it in more areas. Number of firms would hardly be handful as to organise large scale crime is a difficult task. Market power depends on number of other mob groups who have that much power.
Dutch Schultz made his fortune in organised crime related activities. It was advantageous for Luciano who was heading the mob in absence of schultz as Schultz was convicted of tax evasion by Dewey. The marginal benefit was to the existing mob members and it's head, as schultz wanted to kill dewey, wherein the law enforcement would have come on them for killing a federal officer. The marginal cost was doing it discreetly and carefully, thus taking a risk.
The crime rate was very high in Columbia and murder is a serious offense, which the government decided to not take lightly. By reducing such crimes, the economy could prosper as more foreign investors would invest in the economy, increasing productivity and travel and tourism as well.
Why do monopolistic industries, such as organized crime or “The Mob” in 1935, produce less crimes,...