They don't all have it. They are supposed to be accountable to boards etc. Look at how Ballmer was made to leave in the current decade, to cite a tech example. Zuckerberg has broken and circumvented this by concentrating power.
Now, your original point that small indirect suggestions can be amplified greatly by the network of reports eager to execute on the boss's mandate... This is true and I have seen it in large and small scale. I am merely poking fun of "absolute power".
Did you mean that to be such a concise description of the problem here?