Github has been requiring authentication now for "untrusted" ip addresses. They also have aggressive rate limits such that a business running build server(s) will likely hit rate limits.

The reason that's a big deal is, many, even more commercial funded OSS projects, publish their artifacts exclusively on GitHub releases, or the GH container registry. Powershell is an example of this. They're not only locking down development, but also the public's access to the applications entirely. It's total control over software development and distribution.