I don't agree with the "unfair" stuff, what boss isn't selfish and fair...?

It was the approved hit on their Capo by the Genovese family that broke Paul's back and the fact that Paul wanted those tapes that showed the Bergin Crew was dealing smack.

Plus, he didn't go to Neil's funeral, a very disrespectful move to a guy that gave his entire life to the family.

Paul had threatened to wipe out that crew and disband them throughout the family. Gotti simply made his move before Paul made his.