The manufacturer must see that the firms distributing its product hold everything they need to understand the value it is meant to deliver. A distributor may distribute only where its own arrangements, remuneration and charges included, sit consistently with fair value; it must weigh the manufacturer's assessment and the effect of its own charges, and where the manufacturer is outside PRIN 2A.4 it takes all reasonable steps to meet the distributor rule on its own. The firm that distributes to the retail customer carries responsibility for the distribution-side fair value obligations.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.