We develop a model of digital ecosystems based on the assumption that a multimarket firm can use a sale in or data from one market to steer users toward its products in other markets. Due to this "cross-market leverage," a market leader at an "access point" (where users begin their online...

Many intertemporal trade-offs are unbalanced: while the advantages of options are concen- trated in a few periods, the disadvantages are dispersed over numerous periods. We provide novel experimental evidence for 'concentration bias', the tendency to overweight advantages that are concentrated...