Was the Ndrangheta as rich and powerful as the Camorra during the 70s or were they still building as an organization at that time? The 70s were a fruitful time for the Camorra with people like Michele Zaza, Carmine Alfieri, Antonio Bardellino and the Nuvoletta brothers at the head of the organization.
I don't know about their wealth at the time, but they were already powerful through their links with the Fascist right and secret services.