Just read a very interesting concept named as Peter Principle. The original Peter Principle states like: “In a hierarchy, every employee tends to rise to their level of incompetence.”
Stated differently, organizations keep promoting people up the organization until the people they promote reach a job where they are now incompetent. Competence compounded until it turns into widespread incompetence. Organizations need to watch out against this phenomenon. May be, that is why up-skilling, rigorous performance evaluation etc. are required at every stage. Past performance may not be the sole and sufficient indicator for future performance.
Check out the original Peter Principle here.