The sky is the limit. The problem with high-level CEOs having affairs with subordinates is that they create extra scope for insider trading, for blackmail (and thus for espionage, corporate and otherwise), as well as the ordinary stuff like people defrauding the company in various ways, staff being compelled to keep the secret, staff finding that their own promotion is impossible because the person boffing the boss gets their job, the subordinate themselves effectively finding they can't break off the relationship, all sorts of stuff. Lawsuits all over the place and usually some other secrets come out.

Whether or not you're arguing that Nvidia should just say, well, the worst his shagging around is going to cost us is X billion, price it in and let it slide, as so many seem to be, I can't give you a number.

But ethics, the law, it actually does matter.