With access to AMD or Intel CPU power for pennies on the dollar v/s PPC, and the possibility of purchasing a new OS to run on your machine, there would be new users. Thousands on the conservative side. Tens of thousands in all likelihood. From there you have a seedbed for forward momentum. Embedded CPU's in limited quantity is not a viable upgrade path, no matter what the zealots say.
Why didn't AROS make this happen already then?
It's tough enough to get developers to support apple, harder still to get them to support linux, and we're banking on a sudden renaisance for an OS most people today haven't heard about, which would have 20 years of catching up to do, and which would start with zero software support ?
People love to moan about PPC but it's not a difference of "path forward" versus "dead end". THey're all dead ends here.