Eventually it got to a point it could iterate very quickly and was really only constrained by total system RAM which meant a dozen at most copies could be running simultaneously.
https://learn.microsoft.com/en-us/windows-hardware/manufactu...
https://learn.microsoft.com/en-us/windows-hardware/manufactu...
I don't use windows but have to run windows 11 VM to access special devices. I don't want to bother with licenses, although I have them, and creating a new incus QEMU VM from scratch everytime from an ISO takes ~5m, freeing me up from worrying about all the activation and license drama.
If the activation and license setup was easy/automated in QEMU, I would imagine snapshots would be way easier. I would prefer not needing to connect to the internet.
Your info might be like decades out of date, since windows 10 it's just been an overlay and locking out some appearance customizations (you can still set them via other means though).
There are so many unknowns and the ability for the agents to dynamically adjust and make decisions allows for some really powerful autonomous workflows.