Final answer:
David Perdue means that the dominance of big-box retail stores creates a demand for a more convenient alternative.
Step-by-step explanation:
David Perdue means that the dominance of big-box retail stores creates a demand for a more convenient alternative, such as small-box retailers like Dollar General. Big-box retailers often offer a wide range of products at lower prices due to their economies of scale. However, they are typically located in larger, more distant locations, making it less convenient for some customers. Small-box retailers like Dollar General can capitalize on this by providing a more convenient location and personalized shopping experience.