I am sorry but unless you’re using a very proprietary device. You can almost always boot a Linux OS. And you don’t even need to install it as there are various ways.
- Dual Boot
- Virtual Machine
- boot off of Flash drivem. Some are even designed to be a full is on a usb stick.
And Linux is free.. so cost is not an issue.
If you’re really wanting a Windows based on NT. Well there is the long project ReactOS.
If people are going to continue to run Windows XP, 7 & 8. At least use an old computer as a proxy server running Linux.
Funny thing was Windows 10 was supposed to be at one time the last Windows with moving to a supposed Rolling release. And we know that didn’t last.
The good with Linux is generally all your old programs can still work. Vs Windows that removes compatibility with even simple production programs like Print Shop etc..
You can even run old DOS programs in Linux.
Linux rarely removes compatibility with old programs. And is often due to this what keeps old hardware running long after it is abandoned either because a company has collapsed or simply moved on with new iterations & direction.
My youngest PC ATM is about 8 or 9 years old. Old Intel i5-6500 and a Ryzen 7 2700x. Also have some DDR PC computers as well.