It's someone you can pin board and shareholder decisions on, as well as changes in market and accidents, that just goes away and lets some other people keep their power and profits instead of being accountable for their mistakes or lack of strategic performance.
I think the problem is you have to hire someone highly qualified and with relevant experience to at least show you're doing due diligence, and those people aren't cheap.
American capitalism has lots of problems. The idea that CEOs "almost always" have no real-world experience is hardly worth arguing against: "almost always" is meaningless rhetoric and "real-world" likewise (what counts as real-world experience for Google? WPP? Northrop Grumman?). Jensen Huang is mentioned literally at the top of this thread and is an obvious counterexample.
