Canada is in an abundant TP equilibrium. Washrooms in restaurants, shopping malls, museums, universities, and other public places are, generally speaking, well stocked with toilet paper (TP).
Inner Mongolia is in a scarce TP equilibrium. With the exception of elite venues such as four star hotels and airports, toilet paper is absent from public places.
Each equilibrium is self-sustaining. An abundant TP equilibrium is maintained through competition. Any firm that deviates from the norm, and fails to provide toilet paper in its washrooms, will be shunned by customers, who don't like unexpectedly finding themselves in an uncomfortable position and, furthermore, interpret the lack of toilet paper as a signal of deficient management and poor quality service.