Right. Besides, even commercial S/W companies cannot afford wide target range anymore. It costs them too much to develop specific code for win32/linux, then S/W and H/W graphic rendering (on opengl, d3d, ... no, not glide anymore...). It also means more complex support and maintenance. If you add lower-end machines on top of that...
You could see this with id. I think they were one of the first gaming company to say \"well, now we don\'t publish s/w-rendered code anymore !\". Was it risky ? They are still there, and I don\'t know many people without a 3D card in their computer.
By the time PS will be more mature, your computer should normally beef up anyway. That is a corollary to Moore\'s and Darwin\'s laws (though I\'m not sure they worked together

)
What I am very curious about is how PS will scale. Now, there is \"only\" one city of, let\'s say, medium size. Most of the buildings are empty (or are they full of diamonds - sometimes I wonder). And if you look down from the big tower, you can feel that there is much work to be done by the rendering engine so that you can admire the view of MB.
Will they do like in Morrowind for inside/outside ? And will the land be continuous ? We\'ll see...
But I\'m afraid the gain they could get with optimizations will be used to extend the features in PS.