Imagine having a planning department that hires MBA's with no operational experience, fresh out of business school. You then assign them a full time job to write a strategic plan. After interviewing the operational managers, conducting various kinds of research, holding endless meetings, and generally wasting a lot of resources they publish a thick tome about how the company should run its business. This plan is chiseled in stone tablets and quickly becomes irrelevant. After attending multiple meetings where the plan is introduced and explained to the operational managers it is then filed away and forgotten until the next planning cycle.
Life is unfair.
Despite the MBA's hard work, despite the quality of the analysis, thinking, and planning, the plan seldom is read much less implemented. Most often copies of the plan end up in one of the many circular files that working managers keep for such nonsense. Strategic plans created by the people who will implement them and live with the consequences work. This form of strategic planning will never die. Everyone has the same 24 hours a day and seven days a week.