> but to oversee their family's share in the enterprise

Not exactly, he's there to oversee the culture of Berkshire and ensure it's continuity. Buffett is donating all of his wealth (and has already donated $66B), so there isn't a fortune to protect.

Berkshire is an institution of sorts at this point, and requires strong stewardship to prevent enshittification (for lack of a better word).

Some better words just off the top of my head:

- to prevent institutional degradation.

- to avoid cultural shift for the worse.

- to keep hold of and nurture that culture.

And this is how you get constitutional monarchy.