Rivalry (economics)
In economics, a phenomenon in which the consumption of some goods prevents their simultaneous consumption by other consumers, occurring for most tangible goods and some nontangible goods , but not for others
In economics, a good is said to be rivalrous or a rival if its consumption by one consumer prevents simultaneous consumption by other consumers, or if consumption by one party reduces the ability of another party to consume it. A good is considered non-rivalrous or non-rival if, for any level of production, the cost of providing it to a marginal (additional) individual is zero. A good is "anti-riv... Wikipedia