I'm still just getting familiar with this case, and trying to avoid getting sucked into all the side details. Sorry if I'm stating the obvious, but my thoughts are: So often it is the husband who's responsible for a wife's murder. That's where police always start, especially if she's been to see a divorce lawyer. Who else has a motive to kill her?
And then, if he really was addicted to opoids for two decades (hard to believe anything he or his lawyers say, which is another reason to assume he was involved, he's so inherently devious), his brain was probably so addled, he could well have decided to eliminate Paul as a way to make that endless court case/liability problem go away.
However, to me Alex seems incapable of actually pulling it off, plus needing an alibi, so I think he hired someone. Or promised them something.
His alledged suicide attempt, IMO, was really an attempt to cover up his role in the murder, by trying to make himself seem a victim of the same criminals.
I would guess that it was not so much money itself he cares about, but that money props up his status/self image as superior and all-powerful, part of this great, legendary family. And probably needing money for his addiction and perhaps pay off the unnumerable people he owes favours to, who are blackmailing him, or are backers that keep his ponzi scheme/insurance frauds afloat.
There's the well-known saying about such families: rags to riches to ruin. In this case, it seems to have taken 4 generations rather than the usual 3.
JMO
