I ran it on a MIPS Magnum R4000 for a while. I forget the name of the compatibility feature, but you could run 16-bit x86 Windows apps (may have been 32bit, it's been 20 years) with only a slight performance hit.

And it demonstrated how valuable binary compatibility across generations were, as Windows have never really gotten off the ground outside of x86.

This in large part because of corporate and consumer demand for being able to run their existing software on new computers.

Something that both the FOSS world and others should take note of (and no, app stores do not remove this issue).

Well, I guess at the time there just wasn't any demand for Windows for Alpha or MIPS workstations. PCs had huge demand.

Oh there was, just people with big pockets. Have some application written in VB6? Need it to go faster where money is no object? Get VB for the Dec Alpha. Although I've never seen anyone do that, but there was such a thing.

Now when it came to a massive DEC Alpha to run SQL Server, then absolutely. It was the ultimate hardware solution to a software scalability problem, and it was not cheap.

The happening of free UNIX clones also helped, as the companies that might have transitioned to such Windows systems, rather migrated to BSD and Linux distributions instead.

Yes. Its predecessor is still a port in progress to x86 instead of running on it due to its less portable design. That was a real improvement by NT team.