Artificial scarcity describes the scarcity of items even though the technology and production capacity exists to create an abundance. The term is aptly applied to non-rival resources, i.e. those that do not diminish due to one person's use, although there are other resources which could be categorized as artificially scarce. The most common causes are monopoly pricing structures, such as those enabled by intellectual property rights or by high fixed costs in a particular marketplace. The inefficiency associated with artificial scarcity is formally known as a deadweight loss.