Right now there is no business model, on purpose. This is why I'm personally supporting it. I think what David meant is that we are sustainable because I am committed to sustaining the project. Our goal is to find a properly sustainable model in the future that meshes well with our mission and ambition. It will be exciting to figure that out!
Good on you, one could've said the same about Next.js. Technically there is no business model, but one has been built providing additional services around it.
Next.js was an OSS project before ZEIT (now Vercel) hired on the developers, if memory serves. Next.js was certainly not the main vision for Guillermo as far as I know, but it ended up becoming a very large focal point due to its widespread success. Now, Vercel has an entire ecosystem - Next.js is certainly a 'product' in that regard.
