My point still stands though. He can do all of that while in a high-level consultancy position. And if he passes in, say, 2026 (reminder that he'll be 90 years old) the core team can carry on. The continuity of the team stays relatively intact, instead of losing much of its direction via the leader's departure. Same happens in ad hoc business groups setup to tackle problems.
He still seems pretty sharp, and it would be all about what kind of team he puts together to do the grunt work on his behalf.
My point still stands though. He can do all of that while in a high-level consultancy position. And if he passes in, say, 2026 (reminder that he'll be 90 years old) the core team can carry on. The continuity of the team stays relatively intact, instead of losing much of its direction via the leader's departure. Same happens in ad hoc business groups setup to tackle problems.