I hate GH Action runners with a passion. They are slow, overpriced, and clearly held together with duct tape and chewing gum. WarpBuild, on the other hand, was a breeze to setup and provided faster runners and lower prices.
This is a really shitty move.
Hey GitHub, your Microsoft is showing...
However, my experience with GitHub Actions was really poor. Some build that would run perfectly on my local machine and any other servers we have hosted would always time out on GitHub runners. I went back and forth from small runners to large runners and the result was always the same. Then I found that there are third-party companies just offering replacement runners for GitHub Actions at less than half the price for an amazing reliability and cost. It was a night and day difference.
Now... this move by GitHub is almost unbelievable. Charging folks to use their own machines
Given github ran 11.5 billion mins of actions in 2025, and most of them would've been on self-hosted runners, this move makes some sense from their POV.
However, this is still an... interesting... move, especially after bitbucket got all that hate a few weeks ago for doing something similar.