The case is, in reality, a composite of several real-world clients. Their "profiles" have been blended and the result appropriately "scrubbed" to protect the "innocent."
It is set in the supermarket industry to assure broad accessibility. Who hasn't some basic concept of how a supermarket functions as a business? We've found that supermarket tasks are sufficiently transparent and varied to map well to other industries, which further aids in the understanding.
We've found the vehicle a useful learning metaphor in both corporate boardrooms and university classrooms. Oddly, it's proved particularly successful in bringing crucial strategic concepts to engineering-driven firms perhaps by virtue of its comparative cultural "shock effect."