To be fair, most of Little Al D'Arco's life he wasn't in the mob, meaning he wasn't made. But at some point after he gained some rank he did earn good, I forgot just how much I'd have to read the book again. I still don't think the size of their houses and the rent they're paying is necessarily or always indicative of how much money they make or have. Also, keep in mind that money generated isn't for the mobsters to live it up, they're mostly making money for the family or organization, which goes into its coffers or "bank" so to speak, like a common fund. I know for sure the Bonannos had one probably the other families too.