During the '60s and the '70s, basically all software was Open Source and everyone was allowed to copy, modify and redistribute computer programs. When software ceased to be hardware-specific and the diffusion of computers took off, firms started to produce software independently from hardware...

We study an endogenous growth model where a profit-motivated R and D sector coexists with the introduction of free blueprints invented by philanthropists. These goods are priced at marginal cost, contrary to proprietary ones which are produced by a monopoly owned by the inventor. We show that...

There is considerable debate regarding the use of intellectual property rights (IPR) to spur innovation in the software industry. In this paper we focus on the choice of intellectual property right regimes and industry growth. We begin by developing a growth optimal mixture of open source and...

This paper considers a dynamic model of the evolution of open source software projects, focusing on the evolution of quality, contributing programmers, and users who contribute customer support to other users. Programmers who have used open source software are motivated by reciprocal altruism to...

This paper studies the impact of software piracy in a two-sidedmarket setting. Software platforms attract developers and users to maximize their profits. The equilibrium price structure is affected by piracy: license fees to developers are higher with more software protection but the impact on...

Recently the software industry has experienced fundamental changes in market structure through the entry of open source competitors, e.g. Linux's entry into the operating systems market. In a simple model we examine the effects of such a change in market structure from monopoly to duopoly under...