If you had to explain the value of two-step distribution, could you? Two-step distributors buy products from the manufacturers and then sell the product to independent dealer businesses. The dealers, in turn, sell it to the end user, thereby earning the two-step definition.
For those of us in the OPE industry, it is the way we do business so we do not think about the inherent value. It just is. Many times the simplest and easiest way to explain something is to just list some of the benefits for the dealers; explaining why they would want to use distributors, and then do the same thing for the manufacturers.