The best way to predict the future is to create it.
Leadership is lifting a person's vision to high sights, the raising of a person's performance to a higher standard, the building of a personality beyond its normal limitations.
Most discussions of decision making assume that only senior executives make decisions, or that only senior executives' decisions matter. This is a dangerous mistake.
Company cultures are like country cultures. Never try to change one. Try instead to work with what you've got.