Re: Almost all PCs sold these days run the 64-bit Win 10 @Mage
"Which is why MS supplies a free 32 bit VM with XP for certain versions, or did, which supports NTVDM and WOW32-16."
The XP Mode was as you said a virtual machine, and MS just provided it for backward compatibility with software that refused to work with Win7. It didn't integrate with the Windows 7 host, you could achieve identical system with e.g. VMWare Workstation under Linux.
I'm running 8-bit software on my C64 emulator perfectly fine but that's not a Windows feature, is it?
"There ARE 64 bit OSes that run 32bit and 16 bit x86."
Natively - which ones?
MS had to drop 16-bit support from 64-bit Windows because the x86 CPU's couldn't execute in 16/64-bit modes at the same time. Blame AMD.
"MS 64Bit Win7 & Win 10 is less compatible with even 32bit Win applications than an x86 atom tablet with USB keyboard and 32bit Win 10."
What on earth are you referring to?