To all of you around here who do FOSS, please reconsider this kind of attitude. The ones offering can be employees, and they had to argue your case.
Just a couple weeks ago I asked a maintainer of one our Rust dependencies to give us a quote for fixing an issue. I had beforehand negotiated the deal with the CTO, it could have been anywhere up to $5k for roughly one day of work. No license involved, just money against some of their time to improve their open source code. To my dismay, they refused and did it "for free" while giving us a link for a donation.
Guess what? The donation never came. It doesn't make sense for the ones who think in ROI, even less for the CFO behind them. Now I'm too ashamed to even show up on the issue board so we're all at a loss.