i want to add. if win8 rumors are true, it will be another sign of desktop death. if the whole os is virtualized in the cloud, and you dont need fast components to run your software, then you eliminate performance differences compared do desktops.
No, when the cable goes out, you realize how idiotic that setup would be.
Augmenting processing power, and storage redundancy, transparently over a network, using built in OS features, would be excellent. It would threaten common software niches, but it would make life easier. If the network were required, you would be at constant risk of having a doorstop. Desktop/laptop doesn't matter. If the network reliability is lower than that of municipal water, it fails at its face.
if a laptop does exactly the same thing as a desktop, is even cheaper simply because less mass, and is portable... why would you want a desktop?
Because none of that is true.
My monitor weighs as much as the rest of my PC, and more than any laptop I'd care to have. Few laptops have large enough displays to replace a good monitor, and if I wanted to add to it, even fewer have multiple DVI outputs.
My keyboard could practically be sued as a weapon, and has
no equivalent in laptops. Mid-high end Lenovos, and high-end HPs and Dells might have good keyboards, but even the best can't touch what my desktop has.
My mouse needs a nice flat surface to roam on, and to rest my arm on, that is not too high, not too low, but is higher than the keyboard. For non-desk use, anything but a titmouse is also unacceptable.
...there is no way I could actually be productive on a laptop, except in the situation where I would need to be doing something away from a predefined workspace, in which case transporting peripherals would be undesirable. If the laptop plugs into a docking station with all peripheral options, then I still lose out on storage, it's going to be quite expensive, and that's one less redundant computer around, for when one goes TU.
That a desktop can be replaced is ludicrous. That it is a market which will shrink, that the form factors will shrink, and that integration will lead to further commoditization (sp), however, is assured.