OpenAI could direct anyone working at Astral to insert whatever they want into uv, ruff or ty, without any regard to the needs or desires of the wider community. Or just drop working on it entirely.
Sure, these tools are open source and can be forked. But to do that successfully you'll need to replace everything that Astral currently provides these projects: expertise of core contributors, the time they have to actually work on it, and organisational skills to manage these projects.
This isn't something you can do overnight.