Amiga should really be an OS that runs on industry standard hardware.
Ship with drivers for common video cards, audio, etc... and allow for new drivers to be written for new hardware very easily.
We have all the hardware performance we could ask for in a couple hundred dollar PC, and I think a fair number of people would spend $50 or so on a second OS for their PC.
Amiga OS 4.1 should run on the Intel/AMD platform!