Genuine question: where are they?
Why do we get articles like the one in this thread, or maybe others like it, for example https://christine.website/blog/open-source-broken-2021-12-11 and https://staltz.com/software-below-the-poverty-line.html
Are we not just there yet, as an industry? Or are there models that work really nicely, but just haven't gotten popular enough?
https://www.gnu.org/philosophy/selling.html.en
https://www.gnu.org/philosophy/selling-exceptions.html
However, any business model which is otherwise ethical and supports free software in some capacity is a free software business model.
1. https://ozyandmillie.org/archives/comic/ozy-and-millie-96
Royalties might be the opposite to open source ethically, but they'll let some developers get rich, for sure.
Look, you just mint a NFT for it. Easy peasy. If you can do it for Bored Gorillas or whatever, you can do it for a software release.