I am not sure it makes sense given why companies exist in the capitalist system. Stockholders, I'd think, on average care more about the returns less whether the CEO is a likable character.
The real problem is potentially illegal behavior, of course.
This ignores the direct consequences like "worse" employees getting promoted (affecting business) or put in charge, or like in this case, potential national security issues.
I'm sure Jenson knew sleeping with his direct reports was wrong. And that plenty of CEOs got fired for that. Nothing arbitrary about that.