So Miyazaki and his team are ripping off thier own game? The game was originally concieved by FromSoft and funded by Sony. I honestly don't see why they can't go multiplatform and do their own thing, especially after the fact that Sony basically refused to publish the first game worldwide.
No I don't see how this a problem at all. While Sony may own the rights to Demon's Souls, it's FromSoft who created it from scratch. They can do whatever they want with the original concept.