Services, innovation and the new economy

Several distinctive stylized facts form the new economy, an information technology service sector organized in network forms of organization, an inflation rate below its fundamentals, an increase in stock market volatility, high rates of economic growth, but apart from a small information technology manufacturing sector low productivity rates. This paper presents a model where the innovation of new service varieties can explain all of these facts. First, productivity gains are no longer realized within but between firms, as the increase in variety increases value-added per employee. Whilst service innovators, such as the information technology manufacturers, get ever more productive, individual service firms will exhibit low productivity. It is this unmeasured sectoral productivity gain, which is the key element in understanding the intrinsic inertia in the price index. Finally, the paper shows that variety in the service sector enables service providers to realize rents, where fluctuations of these rents are the basis of more than proportional changes in the firms' stock market value.