In other words: how to 1) motivate the author to publish project as L0 and 2) motivate the author to keep working on it. Am I right in my understanding of what

In other words: how to 1) motivate the author to publish project as L0 and 2) motivate the author to keep working on it. Am I right in my understanding of what you are saying? If "yes" then it is a reasonable question. Some complex projects have quite narrow potential audience to get sustainable cache flow (from new license buyers). But are valuable for those few who already paid.