COSTS OF HOUSING CRISES: INTERNATIONAL EVIDENCE

This paper analyses the costs of housing crises in terms of GDP growth and the economic conditions under which crises are particularly costly. Housing crises are often followed by recessions that are longer than other recessions. According to empirical estimates, a housing crisis reduces the GDP growth rate in the following year on average by two percentage points and has still a considerable negative impact in the second year. One important channel through which the effect of housing crises is passed on seems to be the banking sector. In addition, our results suggest that negative wealth effects possibly cause further reductions in GDP growth.     

Customer‐specific synergies and market convergence

We use an analytical model to study the effects of customer‐specific synergies, i.e., synergies that arise when firms sell multiple products to the same customers. At the firm level, we show that the profitability of a customer‐specific synergy depends upon cross‐market correlation of customer preferences, differs when the synergy is cost‐based versus differentiation‐based, and can even be negative when the synergy is kept proprietary to a single firm. We also show that returns to imitating such a synergy may decline as it strengthens. At the industry level, we find that exploiting customer‐specific synergies causes endogenous market convergence at a point that depends upon whether the synergy is cost‐based or differentiation‐based and whether it is imitated. Copyright © 2015 John Wiley & Sons, Ltd.