From your first post:
Really, it’s not a fundamental question of money; it’s a fundamental question of engagement. Right now, Natron appears to have a cadre of involved developers who can find the time and inclination to perform maintenance, without the incentive of payment. Throwing money at these folk doesn’t just magically solve the problem; software development is not a ‘gig’ engagement. It requires significant commitment in learning the architecture and organization of the code base which a few dollars here and there (substitute your own currency) cannot magically solve.
The more powerful influence upon the health of open-source projects is the commitment of talented individuals, for whatever reasons they might bring to the table. Money might be one reason, but a ‘gig’ approach to payment doesn’t endear most to an involved commitment when they need to first figure out how to survive in the world.
If you really want to rely on Natron for your endeavors, you might consider pitching in…
Edit: Sorry @heckflosse, I thought I’d clicked the other reply button… 