Yep because Leonardo is still behind bars and he would be there with him if he didn't have cancer.
If Stefano dies I got a feeling Rizzuto won't be far behind. His only hope now is Arcadi/Del Balso and I'm not sure even that would save him at this point.
I read a blog post from an author who believed that the Arcadi/Del Balso faction is a rival group, fighting for control of Montreal against the remants of the Rizzuto group. The author said Arcadi had been an acting boss for the family and felt he was entitled to the top seat. That's why Lorenzo Giordano was hit, to send Arcadi a message and to weaken his power base.
I'd be curious to hear what others here on the Boards think.