Years ago, a sailor friend was always just a member of the crew.  He, like I, would sail for pleasure and sometimes for a race.  He was quite often left immobilized by the motion of the boat.  In other words, he was sea sick a lot, leaving others to sometimes critical tasks.  Then he bought his own boat.

At the time, I was stunned.  How could he make himself responsible for his own boat with family and friends depending on him for instruction and, at times, safety.  He was never sea sick again.

In this same fashion, it is not unusual for the staff person, who at times goes home sick on busy days or buys inappropriate numbers of inventory at too high prices, to change dramatically after buying the business.

People in charge can take on new characteristics when given the helm.