Earlier quoted context omitted.
How does open source mean loosing any of that? You don't need to accept everyone's stuff, or even anyone's.
I think that's the model SQLite follows. Open source, closed development.
Open Source means that if someone is determined enough, they can go do it for themselves. Sometimes that ends up with a viable alternative -- neovim, for instance -- and sometimes it demonstrates that a rejected feature was actually useful, and is folded back in to the original -- but most of the time it means a copy of the code base with one patch and one user. All of these are valuable in different ways.