What lock in? They explicitly said:
> Staying open to all was a non-negotiable requirement for both us and for Cloudflare.
They have deployment guides for practically every provider out there: https://docs.astro.build/en/guides/deploy/
And at the end of the day, most of the deployment is just deploying a static site... Which you can do practically anywhere.
They can stay open source, but stop putting any effort into supporting deploying to cloudflare's competitors, including accepting PRs for such improvements.
Or they could add features that only work if you deploy via cloudflare.
I also take anything said in an acquisition announcement with a grain of salt. It is pretty common for companies to make changes they said they wouldn't a few years after an acquisition.