Most software developers have little interest in entrepreneurship, but an open-source software project will survive and thrive only by delivering value into a market (users) with business partners (contributors) and against competitors (other open and closed source software). If you want to run a successful open-source project, it helps if you consider the key questions that apply when defining a commercial business model. I'll expand on Chesbrough's and Rosenbloom's list of 6 themes to demonstrate why.