The family offices I've worked with do pretty much everything. Part of the reason to do everything is that you have the freedom to do so. I literally called a friend on behalf of another friend to get him a bridge loan for a house once. A free mandate makes for more interesting work, plus as the manager you can stick things in illiquids that have no mark-to-market. That's the uncharitable view, of course. The charita…
The SEC remedy against bad hedge fund owners in the show Billions is the threat of turning them into family offices
After being banned from managing outside capital, SAC Capital Advisors transitioned to being a family office called Point72. Only recently has it begun to to manage outside capital again.