The real gap is that there's no natural mechanism for projects that are critical infrastructure for many companies to capture even a tiny fraction of the value they create. pip, Django, and the whole ecosystem that Jazzband helped steward are worth billions in aggregate business value. Their maintenance costs a few thousand dollars a year in volunteer time.
I don't think licensing changes alone fix this. Companies have legal teams that can route around them. What might actually work: large package registries (PyPI, npm) implementing a voluntary but strongly encouraged funding mechanism where companies self-report their usage and contribute to a foundation pool. It would need to be opt-in and friction-free, but even 10% adoption from mid-sized companies would transform the economics.
> 60% of maintainers are still unpaid.
That's actually not as bad as I would have guessed.