Product innovation
Non-price competition in oligopoly may also take the form of product innovation whereby rival firms attempt to gain a larger slice of the market by constantly seeking to improve the quality and/or style of their existing products, or by developing entirely new products. This innovation usually has to be backed by extensive research and development (R&D), and has the effect of causing rapid obsolescence of consumer durable goods, a renewable source of demand and certain decline for those firms unwilling or unable to engage in such innovation. Most car manufacturers, for example, are constantly in the process of changing the design and other features of particular models so as to generate new demand, and the few large firms that dominate the pharmaceuticals industry are locked into a perpetual struggle to develop new and better drugs. An interesting market to study in this respect is that of mobile phones, I-pods and I-phones!