There are only two ways to influence human behavior: you can manipulate it or you can inspire it.
From business to politics, manipulation run rampant in all forms of sales and marketing.
Leadership requires people to stick with you through thick and thin. Leadership is the ability to rally people not for a single event, but for years.
Manipulations are a perfectly valid strategy for driving a transaction, or for any behavior that is only required once or on rare occasions.
In any circumstance in which a person or organization wants more than a single transaction, however, if there is a hope for loyal, lasting relationship, manipulations do not help.