The push of drive is the artificial force necessary to apply to people to get them to work contrary to their own goals.
Enter here the concept of friction. When you apply an external force to an object to get it to move, friction occurs. The amount of friction is the amount of energy lost in the transfer of momentum from one object to another. Loss of energy = waste.
In a pull system, things operate faster by removing friction or constraints. In a push system, things operate faster by applying more force.