A couple of years back I installed eCS2 in a hyper-V container and by nicking a few extensions (not all worked) from VPC I managed to get a very usable system with a few caveats, including the ability to boot the system from eCS inside the container but without booting the Windows system, which is quite a neat feature. I stopped using it due to the fact that Windows took over ownership of the visualisation features of the chip if Hyper-V was enabled and refused to hand it back even if it was disabled, and that made all other emulator systems non-functional including VBox and VM-ware and as I had almost 20 years worth of images dating back to the 90's this was unacceptable, if a bit sad.
No idea if this was a bug that has since been fixed or if it is an architectural problem with the technology.