This is an interesting thing to say, given that:
* The "shape and size" are basically what sets the desktop apart from the television, tablet, the smartphone, and the smartwatch.
* Every desktop under the sun is currently running on "Mac ideas". Who do you think was responsible for popularising the
desktop metaphor? The company may have its ups and downs and more ups but the ideas seem to stick around.
I'm the first one to say that a phone or tablet can't currently replace the Desktop PC as we know it, but I certainly don't think that the current desktop is going to be around in the long run. I would expect that our technology will become more and more a "part of the world around us" and less a discreet "box".
I also don't think there's any need to get in a panic over what's going to happen next year or so. Much like the introduction of the automobile, it takes time for such a sweeping change. There will probably be a few buggy whip manufacturers in trouble, but for the general populace life goes on.
my 2c,
chris