More like third party publishers? Windows has been released for many architectures in the past but without bringing the software ecosystem along it never worked out. They presently seem to be trying to correct that, with an x86 emulator included in their ARM version of Windows 11, but don't have the hardware offerings to create demand.
I actually don't think there has been any significant period where Microsoft was only shipping core Windows operating systems on only x86. It's possible that's actually a deliberate strategy.
But to your point, what they have never been able to do was persuade any significant part of the ecosystem to notice.
Were there any compilers for those architectures from Microsoft ?
DEC created an x86 emulator for the DEC Alpha version of Windows NT, but it still didn't get any traction, despite the Alpha being the performance king back in the day.