https://arstechnica.com/gadgets/2021/11/qualcomm-exclusivity-deal-might-be-keeping-windows-from-running-on-other-arm-chips/

Microsoft has created versions of Windows 10 and Windows 11 that run on ARM chips, but to date, the company has not been interested in selling Windows on ARM licenses to anyone other than PC builders. The ARM versions of Windows can run on things like the Raspberry Pi or in virtualization apps running on Apple Silicon Macs, but Microsoft doesn't officially support doing it, and the company has never elaborated as to why.