This idea is very parochial and American, and it's unfortunate in spreading a wrong idea that gives license for some people to behave as hooligans.
There are massive global companies most of us have never heard of, with CEOs who shun publicity and operate in what is really a mild-mannered but highly competent fashion.
Power also comes from politeness, tact, diplomacy, and the earned attachment of subordinates we call "respect".
They are not constantly immersed in scandal and drama because most of the employees never have much cause to interact negatively.
The cult of US Tech leaders is a vile and embarrassing spectacle of vanity, tantrums, acting-out, histrionics and arrogance. It's very poor human behaviour that harms the perception of business in the wider world, and we should not hold it up as normative.