[cmrdporcupine]

It doesn't help that they didn't ship it with Unix, which is what workstations ran back then. Porting System V to it and selling it with it may have helped.

Then again, both Atari and Amiga tried that with their 030 machines and had no success. They were not taken seriously as workstation vendors (in the then lucrative workstation market) in many cases because of the brand on the box. I distinctly remember a UnixWorld article about the Atari TT030 with the headline "Up from toyland" (above an otherwise positive review)

[LeoPanthera]

They did ship it with Unix. RISC iX was actually available before RISC OS was.

https://en.wikipedia.org/wiki/RISC_iX

[mavhc]

You could get a version with unix, or you could get an OS that was fast and had a good GUI