Or they’ll make it a separately charged feature once they evaluate demand and usage in the beta, but AFAIK that would be new for GitHub.
Not new- GitHub's hosted Git LFS product costs $5/month per 50gb bandwidth/storage, after a 1gb free tier [1].
[1] https://help.github.com/articles/about-storage-and-bandwidth...
Edit: Seems like workflows can only be created in private repos [1],
> You can only create workflows in private repositories.
but actions can be public [2].
> To share GitHub Actions with the GitHub community, your repository must be public.
[1] https://developer.github.com/actions/creating-workflows/crea...
[2] https://developer.github.com/actions/creating-github-actions...
https://developer.github.com/actions/creating-workflows/crea...
> You can only create workflows in private repositories
Maybe they need a new category of paid but still public.
Nope, it's about money.
They've hosted Github pages for free for quite some time... though this may use far more resources.