Final answer:
Retail concentration measures the dominance of large retailers in a market, while channel length quantifies the number of intermediaries. Channel exclusivity refers to selling products from only one manufacturer, and channel quality reflects the level of service provided. Examples include the wireless industry's concentration, automobile dealership exclusivity, and computer manufacturer channel quality.
Step-by-step explanation:
A retail concentration refers to the dominance of a few large retailers in a specific market. It is measured using the four-firm concentration ratio, which calculates the percentage of total sales accounted for by the four largest firms in the market. For example, in the wireless industry, the four-firm concentration ratio was 87.2% in 2016.
Channel length refers to the number of intermediaries or middlemen involved in the distribution of products from the manufacturer to the end consumer. A longer channel length indicates more intermediaries. An example is the distribution of automobiles, where manufacturers sell to dealerships, who then sell to consumers.
Channel exclusivity is an agreement where a dealer sells products exclusively from one manufacturer. It limits competition and increases the control of the manufacturer over distribution. For instance, a dealership exclusively selling one brand of cars.
Channel quality refers to the level of service and support provided by the intermediaries in the distribution channel. It can include factors like delivery speed, product availability, and customer support. For example, a computer manufacturer with a distribution channel that provides fast and reliable delivery services.