The retail and restaurant industries are entirely service-based. As a result, it is imperative that businesses in these industries receive feedback in order to deliver what their customers want to remain successful. There is, however, one major roadblock. It is difficult to get adequate feedback from customers.
Customers visiting retail and restaurant establishments care primarily about walking out with what they came for. In the case of retail, it is whatever consumer good they were seeking. In the case of restaurant, it is a good meal and a full stomach. If they get their product, they aren't as worried about what happened on the journey to it.