Well worth the time to listen.
https://www.cnbc.com/2018/02/28/ken-langone-ge-destruction-happened-after-jack-welch-left-as-ceo.html
I do not agree Jack ran a great company. Jack ran the business he had at hand which was a investment bank (GE capital) labelled as an industrial company called GE. Anyway, Ken is spot on about JI. He is also spot on that GE needs to raise money at some point.