I think your post was quite succinct; you meant x86 emulation on ARM which has been demonstrated. It’s not a performance solution (that software would need to be re-written for ARM) but would cover the requirement for legacy business apps, though even many of those are handled via RDP. The compatibility categories I see are:-I meant copies of Windows, not Windows laptops.
1) 1st party apps: Re-write (highly likely).
2) High-Performance 3rd party MacOS apps: Re-write (probable).
3) Standard MacOS/Windows apps: Emulation (probable).
4) High-Performance Windows apps: Re-write (highly unlikely).
I suspect the proportion of Mac users in category 4 is quite minimal.