I remember someone is law enforcement saying castellano was going to break up the bergen crew and possibly demote Gotti. A lot of guys in that crew earned and their income would of been very effected.
Of course anyone with a brain would of assumed the damage control wouldnt of ended there and Gotti, ruggiero, and gene gotti could of been killed to protect castellano in case he was dragged into a drug case. Castellano also knew Gotti had a big crew , was respected, and viewed him as a threat. Im sure Gotti was aware of that scenario as well.