Gropp, Reint E.; Corvoisier, Sandrine - 2009
We estimate the effect of internet penetration on retail bank margins in the euro area. Based on an adapted Baumol … [1982] type contestability model, we argue that the internet has reduced sunk costs and therefore increased contestability … countries. We utilise time series and cross-sectional variation in internet penetration. We find support for an increase in …