theverge[.]com/2020/6/24/21302213/apple-silicon-mac-arm-windows-support-boot-camp
Common sense really, but something not everyone has thought of, yet. Every OS requires driver software to act as a bridge between hardware & software. Drivers are written by the component manufacturer, and to a great degree, supplied to Microsoft, who uses their data base of drivers to make installing Win10 possible. But all those drivers are for standard Intel & AMD PC CPUs, not ARM -- Microsoft only sells Win10 ARM to manufacturers who create their own drivers.
Neither Microsoft or Apple is going to write Windows drivers for MACs, and it's an unanswered question whether any VM software company will write a version of their software for MAC on ARM.