Rob,
I know you're just trying to stir things up

but your observations are valid.
I know for a fact that Digi would love to not be so dependent on Apple (although I don't know if they would drop Apple entirely). PT works well on a Windows PC, and no one should be afraid to use one as a workstation.
When Apple starts using Intel processors, a fairer comparison will be able to be made, but still there is no company building Windows PCs (OK, maybe with the exception of Alienware, Carrilon, and a few other custom builders) with the industrial design and high-end-appliance care that Apple does. Conversely, millions of IT department, schools, geeks, etc., won't touch Apple appliances because only Apple can make one.
Isn't it funny that today if you buy an Apple computer, you are running UNIX on an IBM processor, but you can't buy a PC at all from IBM?