The answer is to abandon this model where they break people down and then try to build them back up. I think it's to evaluate the quality of people, determine where and how they should be trained, and develop a plan for their careers with deadlines and a list of courses to take and promotions down the road. This way you will also have a continuum where, when somebody leaves, somebody is there to take over who can do the job.
On December 2nd, 2020. See this statement in context.