I realize I sounded overly critical in my comment. Open source sustainability, including in monetary form, is a real issue. It’s very important that we as a community try to find working models, and I commend posts like yours that investigate the possibilities and traverse the solution space. Unfortunately it’s a very difficult problem to solve. I think a model that can work is yet to be found
That said, I find it very hard to understand exactly what you are asking for, the post is rambly with a middle section about books that I couldn’t really understand even after 3 rereads.
I think what you are asking for is: