Digital goods are characterized by negative subtractability. This means that the more such goods are consumed or delivered, the more benefit accrues to all actors in the economic system. This characteristic contrasts with traditional goods, which are usually scarce: possessed by specific actors and depreciated with use. The best example of an anti-rival good is information, which is well known to exhibit non-rival attributes as extra copies of information provide value to new users but do not subtract utility from the original users.
Anti-rival goods are not allocated effectively in traditional markets in which supply and demand depend on inherent scarcity. In classical markets, one additional unit purchased leaves less for other buyers and hence contributes to rising prices. By contrast, consider a digital good, such as music or art subject to digital distribution: if popular, increasing numbers of users will consume the artifact which is costless to share, but its digital proliferation and sharing does not diminish the value of anyone’s consumptive gain. On the contrary, with many types of digital goods, increased sharing only adds to the benefit of larger numbers of users. Moreover, increased sharing also indicates a higher value of the original artifact.
The dilemma gets more complex when we expand our focus to currencies. Traditional money is scarce and has the zero-sum property that one person’s monetary account balance increase is offset by the fall of another’s account balance. Anti-rivalry cannot be accommodated in an economic system governed by a scarcity-based and rivalrous currency. Therefore, ATARCA develops anti-rivalrous token systems (new currencies) to measure and augment the value contributed by sharing digital goods, and by other actions which have the side effect of affording positive sum value to the entire community of users.