hzn: There is no evidence that RO5 is cheaper to licence than ROL's offering. Of course, it would be difficult for it not to be. And there are hundreds, if not thousands, of explanations of why there hasn't been a recent A9 Home ROM image release.
Aaron has told be in the past that Virtual Acorn are unable to sell VRPC without a copy of RISC OS. He would not be drawn on why this was - otherwise we could just use a RiscPC ROM image from the ROOL guys when/if such a thing became available.