I remain unconvinced a CEO is needed in any real, modern capacity. A large enough company has a PR person (who can do the interviews and sell the messaging), an Ops person (who translates Board guidance into actionable work for specific teams and vice versa), a slew of specialty technical people, and a Board who generally sets the course for the firm.
The CEO claims to do all of those, but increasingly - especially in large or mature firms - they’re just public celebrities hoovering up revenue and making connections with other CEOs. It’s a multi-million dollar fleecing of corporate resources to support one dude’s luxury lifestyle. They’re not steering the business so much as making sure we scratch the backs of their buddies to make gameable KPIs look good to the Board, and in that context they’re easily tossed aside.