With the possible exception of lights-out facilities, the sum of the production of workers is equal to the production of a business, and even with lights out facilities, you would attribute the production of the facilities to those who build and maintain them.
A good CEO is absolutely invaluable.
A CEO differs from a General Manager.
"A chief executive officer (CEO) is the highest-ranking executive in a company, whose primary responsibilities include making major corporate decisions, managing the overall operations and resources of a company, acting as the main point of communication between the board of directors (the board) and corporate operations and being the public face of the company. A CEO is elected by the board and its shareholders." ~ https://www.investopedia.com/terms/c/ceo.asp
"A general manager (GM) is in charge of part or all of a company's operations, including generating revenue and controlling costs." ~ https://www.investopedia.com/terms/g/general-manager.asp
The sum of the production of workers is not equal to the production of a business.
Otherwise, if a business increases revenues significantly by simply replacing its CEO, does it mean that the CEO contributes to the increased revenue all alone?