Coldheartedly, I have to admit that indeed it is too late for Amiga OS to have any significance on the future of the computer industry. The amount of money & effort required to make it a viable contender is too excruciating to reckon.
Nonetheless, no reason to panic. Once, we accept Amiga OS for what it is, in the context of modern computing, development can continue on a more hobbyist level. That is why, hardware and software for any future Amiga will cost a lot of money. Nobody, is going to invest in the Amiga if they don`t have a profit.
x86 way? I honestly don`t think that Amiga OS has any chance x86wise. It might be cheaper. But then, so is Linux which is still being used by a minority of users. Furthermore, there already exists a x86 port of AmigaOS, in the name of AROS.
Personally, I`m on standby. I wanna see how the new sam460 and X1000 will fare. If they seem to be doing good and if the prices are right (sure!!!) I just might hop on the Amiga OS 4.1 bandwagon and be a happy ppc user.