I think it's fair to say that if some new, super-duper ARM hardware is not out soon, then native RISC OS machines have had their day. Perhaps more realistic would be to do an Apple and stick RISC OS onto a UNIX base (not emulation) that runs on standard PC hardware or, failing that, RISC OS Select running in emulation on a minimal Linux install that is invisible to the user. RISC OS has the best interface - not as WOW!! as MacOS, but a little more subtle and professional. Sadly, I can't see a real port or merging with UNIX going ahead, so Linux/Emulation is the next best thing.
The death of native hardware is down to a lack of activity from manufacturers. Emulation was a bad thing back in the day, but now there is no laptop, IyonixPC is starting to get long in the tooth, let's not talk about MD and RS, or the lack of a retail A9 Home... well, emulation looks like a life-saver.