That can be one of the reasons, but not necessarily the only reason. I have experienced this in my own career, for sure. Top performers sometimes are implicitly

That can be one of the reasons, but not necessarily the only reason. I have experienced this in my own career, for sure. Top performers sometimes are implicitly disallowed from performing because they are too busy making up for the mistakes of others. Unfortunately, often these top performers don't have the authority to make the necessary staffing changes that would actually lead to success.