Three things constitute the basis of decision making in most enterprises, Risk, Cost and Reward. Boiled down, this is what it is all about.
In a supply chain, each participant does its own assessment and comes to a conclusion about the balance between RC&R in their situation, and acts accordingly.
For a chain to work with maximum productivity, each of the participants needs to come to a bunch of conclusions that complement all the others in the chain, and rarely will this happen on its own.
In some manner, control needs to be exercised through the chain, and as most managers know, managing the things over which we have so called control is usually hard enough, without setting out to manage things over which we have no control.
The control cannot be applied, it must be accepted as consequence of being a part of the larger entity, the chain, which is a part of maximising the RC&R matrix for the business.