Danish productivity has grown only weakly over the past two decades, both historically and in relation to other countries, despite sound policies and institutions. At the same time, the country has lost export market shares. Denmark needs to continue its efforts to reap the benefits of...

This paper studies the innovation strategies of multi-product firms in industries with different scope for product differentiation. In a simple model of multi-product firms, we show that returns to product versus process innovation are industry-specific. Demand and cost linkages induce a natural...