There has been all kinds of talk about why would anyone use the Amiga OS on PC hardware when they have windows? I have heard those arguments before but I don't really believe them. Now it is kind of a moot point.
If I understand correctly, there won't be any new PPC architecture after the current boards unless there is a large order from a commercial concern. That pretty much leaves the x86 hardware or nothing. Either that or the hope that China or somebody else decides they don't want to be beholden to Microsoft. We can only wait and see.