Maybe half of all clients I work with use GitHub Actions for CI (the rest basically all use Jenkins), most of those using Actions use self-hosted runners for performance and security reasons, almost all of them reached out to me asking how difficult it would be to move away from GitHub Actions yet continue using GitHub.
Do you think these companies now suddenly stop wanting to move away from GitHub Actions because Microsoft suddenly changed their mind? I don't think so, probably less priority, but it will happen, because now the cat is out of the bag.
If they'd just do user research before announcing changes and not use announcements as "testing the waters", I'm sure they'd see a lot less churn. But I guess some number counting team somewhere in Microsoft figured out they'd make more money by charging people to run software on their own hardware, so maybe I'm just dreaming.