Many if not most markets with network externalities are two-sided. To succeed, platforms in industries such as software, portals and media, payment systems and the Internet, must "get both sides of the market on board." Accordingly, platforms devote much attention to their business model, that...

A number of empirical studies seem to reject the additive separability of preferences that is assumed in most theoretical models of the life cycle. We show that, when additive separability is abandoned and interactions between consumptions at different dates are taken into account, an...

The classical Bagehot conception of a Lender of Last Resort (LOLR) that lends to illiquid banks has been criticized on two grounds: On the one hand, the distinction between insolvency and illiquidity is not clear-cut; on the other, a fully collateralized repo market allows central banks to...

The classical doctrine of the Lender of Last Resort (LOLR), elaborated by Bagehot (1873), asserts that the central bank should lend to "illiquid but solvent" banks under certain condi-tions. Several authors have argued that this view is now obsolete: in modern interbank markets, a solvent bank...