Its true that the boss can pretend any tribute he want and 50K a year wasnt enought to a crew like the jersey crew that had 20-30 made men and dozen of associates but pretend the 50% was too. In the other cases there would be a meeting but Casso and Amuso was so greedy and stupid to give the "whack new jersey" order.
I dont think that is only Amuso to blame but Casso with a more smart underboss Amuso would the mistake that did.