(Question) Possible to target x86 to escalate to x64?

[ShadowEO]

So let me give some background, I'm asking in reference to some Windows Signature branded devices, a cheap 10" tablet that has an AMD64 capable processor, but the UEFI firmware is arbitrarily locked to 32-bit (which also locks then out of Windows 11). Would it be possible to somehow add support to this to provide the ability to switch the processor in this tablet into 64-bit mode and boot a 64-bit version of windows on these machines, similar to how you guys are escalating from ARM32 to AARCH64?

I ask because there are a wide swath of these machines that came out in the late days of Windows 8.1 and the early days of Windows 10, most of which have the same SoC and same arbitrary lockout. These are definitely locked to IA32 by the OEM and not the hardware as a 64-bit Linux distribution can be installed and run.

I guess I'm asking because now these devices are in the same boat as the Windows Phone devices, and it would be nice to extend their life a little more...