Indeed. Just because a founder helped get something off the ground doesn't mean they'll be particularly effective at a latter stage of company. Nor should we assume non-founders can't be effective at righting ships.
Hmm I just thinking of some examples, always good to have some data. When did a non-founder make a failing company successful again. I can think of Porsche with Wiedeking, however it´s a bit different there, since the founders are already dead I think.
