Jack Welch actually started the downfall of GE when he decided that the people he shuffled around the various businesses didn’t need to know those businesses.
Jack Welch was a piss poor manager. I saw first hand how his decisions screwed up the power division. As long as the markups could cover incompetent management screw ups, they were gold. Eventually markets caught up with them.
#10 and firing 10% of the people in each dept just because.