In the case presented herein, two three-dimensional rendering software products coexist without competing, though they present similar characteristics and rely on competitive technological architectures. The market configuration for these two software products thus appears largely determined by socio-technical elements, not just the technical characteristics of the software architecture. The socio-technical regime within which the technology is embedded shapes the boundaries of the markets for both software products. Therefore, the concept of path dependency appears insufficient to explain the nature of the competition. To explain the factors that determine the market configuration, the authors introduce the concept of socio-technical regimes.