Sales is a specialist vocation in the same way that the HR, Finance or Legal Professions are. It takes at least the 10,000 hours of practice or experience to become a professional in the same way that it takes top class sports people.
Truly effective Sales Leaders are far from commonplace and many organisations do not understand why their sales organisations are not performing as well as they should, except that revenue is “not enough” or “it’s declining”. An experienced eye can quickly understand where the issues are and advise and coach the team to become “best in class”.