[newkid]

The problem is not hardware. It is software.

Linux would avoid the microsoft problems of running too much stuff slowing everything down and boosting latency problems as well as interrupting your work causing clicks and pops. Win is just not a real time system.

Advantage mac more or less. But apple/mac has other problems.

Providing drivers for exixting DAWs on a linux system and also support could have market appeal. Team with one of the free/shareware linux software folks to do a good linux DAW would be better.

Lots of good cheap (and really wowweee expensive) linux boxes out there.
Some with linux and hardware support already. Its the software that matters.

But certainly should consider offering a package of a box plus the software for folks who just don't want to mess with pcs more than they have to.

How about a 4 cpu pc running 4 Tflops and no software gotchas like win.
You could run oodles of channels, with F/X up the gazoo and have no problems.