julianni says it was bonannos book that proved there was a commission, and that because of this he prosecuted the bosses
under the rico law. so in a sense joe bonanno gave julianni ammunition to prosecute. he should have not written that book.
exposing the existence of the commission.
In effect, Bonanno had the last laugh on the Commission, which had rule in '63 that he was no longer boss of his own family, and installed Gaspar diGregorio in his place.
RICO became law in '70, so Bonanno probably knew about it. But, I doubt that he published his autobiography, with those passages about the Commission, deliberately to launch a RICO case.
Giuliani, BTW, is a major "Godfather" fan, and his interest in prosecuting the Mafia may have been stimulated by that.