Another take on this is the fact that the food business is central to the stories.
Vito grew up with a family that owned a grocery store.
Vito's front for all his "business" was an olive oil company.
The casinos, in addition to having gambling, had restaurants and lounges.
Fredo ran mickey mouse nightclubs.
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"
"I stood in the courtroom like a fool."
"I am Constanza: Lord of the idiots."
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