1. Enduring UI legacy
"The stand‑out to me are the use of blue folder icons and the Dock." – iamcalledrob
"There was persistent noise even back in the 90s that the icon bar was inspiration for the Windows task bar in Win95." – fidotron
2. Niche value beyond market share
"The real value of a niche platform like RISC OS isn't measured by market share, but by how much of its design DNA survives elsewhere." – bishengke
"There was at least one program for the Acorn which is unique — Cerilica's Truism — it was a DTP application which actually simulated mixing inks and what inks would look like on various paper substrates." – WillAdams
3. Applications and future prospects
"I think maybe the famous surviving RISC OS application might be Sibelius music notation program." – Lio
"I think we're getting pretty close to the point where hardware manufacturers can find a niche use case for these OS's." – MomsAVoxell