"We're talking about ease of portability. And ROOL's version already runs on more platforms that ROL's efforts. Here is where the story ends. I've witnessed Pace's RISC OS running on several different pieces of hardware over the years."
Ah Yes, you've seen in running on Pace's RISC OS. e.g DSL4000. But can anyone actually list a non-Castle product running "Castle's" RISC OS 5!
At present RISC OS 5 runs on Iyonix, and the first stages of the Beagleboard, plus possibly the A7000, and possibly RPCEmu I make that three/four platforms.
RISC OS 4/6 has currently been shown running on ARM 6, ARM710, StrongARM, ARM9, ARM7500, VRPC and RPCEMu. It also works directly with Viewfinder graphics cards (something that Druck once claimed we would never be able to do.) and also the new Vpod graphics cards. That makes quite a few choices of platform, oh and I haven't included the Omega with its own graphics chip.
How long will it take for RISC OS 5 to run on a Kinetic Risc PC, with a Vpod attached? That will show how good the RISC OS 5 HAL is!
Nothing you've cited proves your ownership argument at all, as tlsa touched on a moment ago.