Incorporations are legal constructs. Any position in one is even more so.

Corporations are required by law to have Presidents and Chairmen. That is the legal construct.

They are not required to have CEOs who therefore sit on shakier legal ground.

> Corporations are required by law to have Presidents and Chairmen

Varies by jurisdiction. Common ones are a president, secretary and treasurer. (They can be the same person.)

when companies are big enough (to where CEO actually has meaning), shareholder rights kick in, and there are many additional legal requirements; none of those require a CEO