Innovation and the demand for food and drug labelling regulation in an evolutionary model of industry dynamics

Product innovation is examined in the context of an evolutionary model of industry and market behaviour in which a new product with a cost advantage and an unobservable, adverse characteristic competes with an existing product. Absent regulatory responses that ensure credible labelling, markets converge to steady state equilibria in which only the new product is traded. With credible labelling, the markets for the commodities become segmented. Welfare effects for consumers depend on the distribution of labelling 'property rights' between new and old product firms, market access, the cost advantage of the new product, and the magnitude of labelling costs © 2001 Elsevier Science B.V. All rights reserved.