I won't claim to have any solutions, except that in the future I'll be a lot more careful about asking people what their intended time commitment is, and where

I won't claim to have any solutions, except that in the future I'll be a lot more careful about asking people what their intended time commitment is, and where they want the project to go. I'd also insist on written agreements from the start. In the case of my project, there was about 6 months of anger, finger-pointing, and general failure to make meaningful progress because all our time was consumed with debates over how the project should operate. Eventually, I realized that the project was a major source of unhappiness in my life and I announced my intention to leave the project. We reached an agreement for the other two to buy out my interest in the project, and they have since made it their full-time job and are attempting to turn it into a real business, working with a local startup incubator.