Open source is suffering from its own success. Our community solved problems with minimal attention from the rest of the world for almost 30 years, slowly becoming the foundation of nearly every piece of software critical to everyday life. Now with increasing regulation around the world, evolving cybersecurity requirements, and changing corporate participation and funding, how do we ensure the ecosystem's continued success? The things that have worked for the first decades will not be the things that keep us going. We will look at sustainability not only as a funding problem, but also from the perspectives of global policy movement, security, and other intertwined issues that face open source in the coming years.