Webjohn gotti, once the most feared mo. Imagine a world where the king of the underworld lives not in a lavish palace, but behind the grim bars of a prison cell. Webwhen john gotti succumbed to throat cancer at the age of 61 in 2002, he was but a shell of the powerful mafia boss that once conquered new york. By the time of. Webgotti was sentenced to life in prison without the possibility of parole, marking the end of his reign as the boss of the gambino family. The conviction was a significant victory for law enforcement and a testament to the effectiveness of the rico act in.