We are building some educational video games and considering starting a company to help sustain the effort. If possible, it would be great to publish the source

We are building some educational video games and considering starting a company to help sustain the effort. If possible, it would be great to publish the source code and game assets as free/open software and free cultural works. However, I’m not sure about a business model to fund continuous research and development. Is anyone here working on or aware of any open source game studios with sustainable funding/revenue? Any other advice or consideration about licensing and business models? Thanks in advance :-)