PCs aren't vertically integrated from a single vendor, and thus it isn't as if Microsoft alone can drag a whole ecosystem into ARM, even if the emulation would work out great.
Windows NT was also multi-architecture, and eventually all variants died, because x86 was good enough, and when Itanium came to be, AMD got a workaround to keep x86 going forward.
Even gaming doesn't work that great on Windows ARM.
They have the Surface line and own tons of game studios.
Where are the Gamepass games with Arm ?
Microsoft if they wanted to fund it right could get popular 3rd party software ported.
In retrospect it was hopelessly naive, but I even emailed Qualcomm asking if I could have a dev kit in exchange for porting one of my hobbyist games. They basically said thank you for asking but we don't have a program for this.
Now hypothetically let's say there was a Qualcomm Snapdragon Linux laptop. I could just port the code myself for most applications I actually need
These devkits are old and have already been released to consumer laptops over a year ago. So if you want to you can pick up pretty much any CoPilot+ PC. I'm not sure what your problem here is though.
PCs aren't vertically integrated from a single vendor, and thus it isn't as if Microsoft alone can drag a whole ecosystem into ARM, even if the emulation would work out great.
Windows NT was also multi-architecture, and eventually all variants died, because x86 was good enough, and when Itanium came to be, AMD got a workaround to keep x86 going forward.
Even gaming doesn't work that great on Windows ARM.