If some company were to make an x86 amiga os separate from AROS they would have to put in at least a couple years of dedicated effort just to get where AROS is now. Not only would they be reinventing the wheel, they would also be alienating those of us who have followed AROS from the beginning (or close to it)
They would be competing with a free product that is already quite stable and polished, which also has apps being developed for it. AROS has a maturity that has come from years of development and a very capable update framework that includes drivers, apps, and os functionality all organized through some very capable programmers.
No matter what the tail has caught on to, AROS is here, it's getting better all the time, and it and its programmers deserve some serious respect.