Despite the way Bonanno made sure to have Gaspare DiGregorio climb the ladder along with him, DiGregorio eventually sided with the guys against Bonanno
Yes, from what I've read as well as from what I have subsequently heard from guys in the know, I get the feeling that Bonanno was extremely tight with a buck. So although his men, capos and upper cabinet held position, he still took the lion's share of profits. That, coupled with him later trying to shoehorn his kid Bill into the consigliere position, became the last straw for many of his rank-n-file.
Hence, the "Banana War' ensued.