Wow considering his mental issues probably suicide.
In these 17 years in hard prison at 41 bis, Cosimo would seem completely mad: he no longer washed, he no longer wanted interviews, he did not respond to lawyers. In reality, everyone left him alone. He could repent, try to fix it, but he didn't want to be the first in his family to cooperate. Cosimo was only respected because he is Paolo's son.