An extensive empirical literature indicates that, even without formal intellectual property rights, innovators enjoy a variety of first-mover advantages and that `imitation' is itself a costly activity. There is also accumulating evidence that an `open' approach to knowledge production can...

Technology-based industries have come to account for ever-greater shares of economic activity during the last 30 years. Recently, rapid, digitally-enabled technological change has generated new opportunities for value creation, enabled new ways of capturing value, and stimulated the emergence of...