Business models provide comprehensive representations of the external economic activities of companies. Based on prior research, we can assume that customers have ideas about business models in mind when they interact with a company. This also applies to customers who get involved in open innovation. The question that students should address in a thesis on this topic is if and how these ideas affect the contributions of the customers to the innovation process. Furthermore, they should find out if addressing the business models explicitly has an impact on the contributions that are made. Data can be collected in JOSEPHS or other settings.