Oh really? I had no idea....
If you were to go back in time to the mid 90s, we would see that the hardware limitations of the era is what promoted the development of the Win CE operating system. That and nothing else. The x86 UMPCs or handhelds as we have them today would have been fine running Windows 95. But the hardware just didn't exist back then. Hence an abbreviated tiny OS had to be designed....CE.
So you can get a board today with everything on it relatively cheap. If I were to buy one you can be sure the OS I installed wouldn't be CE. It would be something that interacted well with the modern age, be it a variant of Linux, Android, or whatever.