Salt, alcohol, and tobacco, which are likely to be the object of monopoly, often meet these requirements, while there is hardly any monopoly of grains, which are mass-produced in cultivated land all over the nation, though there are still some such cases.
専売制の対象となるケースになりやすい塩や酒、煙草などはその条件に近い場合が多く、逆に耕作地が全国的に広がっており大量生産されている穀物類の専売は実例はあるものの多くは無い。