Hence the saying: The enlightened ruler lays his plans well ahead; the good general cultivates his resources.
To gain the spirit and action of enterprise requires the leader to actively encourage it and not (as many do) coldly suppress it.
Cultivating resources also includes drawing out all kinds of talents from your people, from spying to devising new and cunning strategies and tactics.
People learn what their leaders really want. Saying ‘innovate’ is like saying ‘be spontaneous’ — it does not work. Better is to create the climate and culture that develops talent and focuses it in places where it will be most effective.