I remember a composer I knew had one because of Sibelius, this was in Australia. They weren't unknown here but were certainly rare. I do remember that RiscOS was a thing of beauty though, very very sleek.
I used to sing with one of the authors of Sibelius, who was a very talented guy. I remember him bemoaning the cost of an Apple dev kit when they were looking at porting Sibelius to the Mac back in the early 90s.
One of the great advantages of the Acorn hardware was that there was no barrier to entry if you wanted to program them. Perhaps because their initial focus was computers for use in education everything you needed was always right there. You could sit down and start typing code.
If you wanted to write C (there was a C++ compiler based on CFront too IIRC) then you had to buy a compiler, but people achieved a huge amount with the tools available on stock machines.
For a number of years, Acorn had the most powerful desktop computers in the world at a reasonable price, but they failed to capitalise on that advantage & were eventually overtaken by the MS/IBM/Intel juggernaut.
I still remember being in awe of the effortless full screen scrolling of scores in Sibelius on RiscOS, so far ahead of the offerings on PCs of the time. I remember thinking the concept of RISC was a bit of novelty though, yeah I may have been wrong about that.
