what is a rival good 
a rival good is a product or service that can only be consumed by one user or a limited number of users the rivalry is among consumers whose competition to obtain the good can create demand and drive up its price a non rival good on the other hand can be used simultaneously by many consumers most common household products and supermarket foods are rival goods a bar of soap or a bottle of beer can only be consumed by a single person if the product is in short supply the rivalry among consumers is intensified a limited edition designer t shirt is a rival good that may increase in price simply because demand outweighs supply a non rival good may be consumed by many people at the same time without any pressure on its supply streaming videos are an example understanding rival goodscertain goods such as a bottle of beer or a designer t shirt are subject to consumption rivalry if someone drinks the bottle or buys the t shirt it is no longer available for anybody else to consume because these types of goods can only be used by one person competition to purchase them is created consumers become rivals in an attempt to obtain them 