Castle and RO5 are the future of RISC OS. ROS Ltd ultimately did NOTHING to allow ROS to run on non-Acorn era hardware. No wonder ROS Ltd is so keen on flogging their dead horse to emulator users.
It's the 'not our responsibility' shoulder-shrugging of ROS Ltd that lost the market Imago/Nucleus/Evolution/Omega - what hardware development there was became wasted on just getting ROS to boot on non-Acorn hardware. Caslte have done more for RISC OS in a year than ROS Ltd ever have.
Caslte just need to find more ways to exploit the market than merely selling a 1249 computer - this excludes too many people from giving them revenue.