Discussions of the ecomic impact of open source software often generate more heat than light. Advocates passionately assert the benefits of open source while critics decry its effects. Missing from the debate is rigorous ecomic analysis and systematic ecomic evidence of the impact of open source on consumers, firms, and ecomic development in general. This book fills that gap. In The Comingled Code, Josh Lerner and Mark Schankerman, drawing on a new, large-scale database, show that open source and proprietary software interact in sometimes unexpected ways, and discuss the policy implications of these findings. The new data (from a range of countries in varying stages of development) documents the mixing of open source and proprietary software: firms sell proprietary software while contributing to open source, and users extensively mix and match the two. Lerner and Schankerman examine the ways in which software differs from other techlogies in promoting ecomic development, what motivates individuals and firms to contribute to open source projects, how developers and users view the trade-offs between the two kinds of software, and how government policies can ensure that open source competes effectively with proprietary software and contributes to ecomic development.
Josh Lerner is Jacob H. Schiff Professor of Investment Banking at Harvard Business School, with a joint appointment in the Finance and Entrepreneurial Units. He is the author of The Boulevard of Broken Dreams: Why Public Efforts to Boost Entrepreneurship and Venture Capital Have Failed and What to Do About It. Mark Schankerman is Professor of Economics and Research Associate at the Centre for Economic Performance at the London School of Economics and Research Fellow at the Centre for Economic Policy Research in London.