Every person I know either already has a Windows 11 ready device, or doesn't know what an OS is. In the later case, I doubt they would trust themselves to buy a new laptop, rightfully tho. Luckily we have a bunch of old laptops from work, Win 11 compatible. Nobody will buy a new Laptop in my village!
And for those tech-savvy, or with tech-savvy family members, you can put Win11 on basically any PC. It may run like shit, but all the requirements can be disabled.
From my understanding, what you're suggesting requires emulation, so you'd probably need another operating system underneath; there are translation layers for other architectures, like Apple has with Rosetta and what WINE did for Arm, but it sounds very challenging to implement something like this for executables of the actual operating system which can operate at a very low level. So I guess this is in the theoretical realm. Maybe someone is mad enough to do this, but I wouldn't expect it.
Hi there. Nice to meet you. I am a person. My desktop computer's motherboard is from 2009ish and only has BIOS, no UEFI. I cannot upgrade it to Windows 11 because of this. I know what an OS is.