In any organization where competence is essentially eligibility for promotion and incompetence is a bar to promotion, people will rise to thei level conpedence. I saw that very often, a competent individual was promoted to something he couldn't do. Kelly sho again, his idea is that firms and organizations tend to promote people based upon their performance.
People who are good at their jobs routinely get promoted into bigger jobs they’re bad at. We explain why firms keep producing incompetent managers — and why that’s unlikely to change.