Because people are the programmers, and they use systems and structures as the outward expressions of their own character and competence. Effective executives lead by principles. Principles are like a compass. A compass has a true north that is objective and external, that reflects natural laws or principles, as opposed to values which are subjective and internal. Values are maps.
Principles are territories.
The more closely our values or maps are aligned with correct principles with the realities of the territory, with things as they are the more accurate and useful they will be. But, when the territory is constantly changing, when markets are shifting, any map is soon obsolete. The map provides a description, but the compass provides more vision, and direction. An accurate map is a good management tool, but a compass is a leadership and an empowerment tool. We are too locked into certain mindsets, into management by maps, into old models.