as someone who works in the python tooling space I think you underestimate the number of people who would be willing to do this. i would personally help maintain a community fork of ruff if it got to the point where one was needed, though I draw the line at moving to nebraska first.
It is proven by the amount of projects that eventually falled by the wayside after the first wave of volunteers run out of steam to keep it going post-fork.
that is a fair point, but I also believe that that happens when the project gets superseded by something better. I do not think ruff or uv will die because people went back to earlier solutions, if openai does kill them and the community fork runs out of steam it will be because someone made an even better tool, possibly incorporating the lessons learnt from astral's efforts.