Supermarkets are not typically considered as small-scale retailers because they are usually large, well-established businesses that often have multiple locations and a wide range of products. In contrast, small-scale retailers tend to be smaller businesses that operate in a more limited geographic area and offer a more limited range of products or services. Urban stores, roadside traders, and itinerant traders are all examples of small-scale retailers because they typically operate in a smaller area and have a more limited selection of products compared to supermarkets.