Companies try to forecast the future. For example, a printer company tries to forecast the future demand of printers. Based on their forecasts, they make planning decisions. Thus, decisions are made in the face of uncertainty.
The more power you give to a single individual in the face of complexity and uncertainty, the more likely it is that bad decisions will get made.
Conversely, decisions made by aggregating the collective wisdom of a diverse group of people will outperform even the smartest person most of the time.
— Paraphrasing The Wisdom of Crowds by James Suroweicki