Putting aside the A1/AOS vs. Peg/MOS bull that keeps any intelligent discussion from taking place...
The fact is that both the AmigaOne and Pegasos are downright anemic when compared to the 'modern' features of todays 'PCs'. But both camps have to start somewhere. Otherwise, like with the BoXeR, you end up with an utterly vaporware product.
Another fact is that the PPC market will always play catch-up with the 'PC' world. That is unless VIA, SiS, IBM, nVidia, etc. start producing OEM N/S bridge chips for the PPC platform. Which may actually happen, if the PPC alternative niche grows beyond just Macs. But for now, we're going to be stuck with 'small' players like MAI who are more interested in embedded computing than the desktop.
[ Yes, I'm aware that both camps are using VIA southbridges, but I'm sure it would make things a great deal easier if both the N/S bridge where targeted at the PPC platform.]