The aim of this paper is to show that innovations are the result of complex interactions between different private and public agents. For that, we identify the nature of the information sources that firms use to produce their innovations and assess the impact of these different sources on the...

This paper analyzes the impact of music file sharing on CD purchases. Traditionally, two arguments are opposed concerning the impact of music file sharing on CD sales. On the one hand, MP3 downloads only reduces sales of legitimate CDs (the "competition effect"). On the other hand, consumption...