Well we're talking about a thousand times the transistors that go into modern day computers in EVERY SHIRT WE OWN. We also have to take into account that there will be a lot more people in developed countries by that time as the population is expanding and the general quality of life is rising quickly for people in underdeveloped nations. There just isn't enough metals and other materials to make and support that. Even if we had the raw materials, it would produce more carbon than our environment could handle to produce the things. I'm not saying that the technology isn't possible. I'm saying that it isn't practical.The way I see it your argument is pretty much the same as how there were only a few computers 40 years ago on the whole world and now almost everyone in the developed world has at least one (desktop computer and portable computer - smartphone).
And people are talking about the desktop computer dying and smartphones taking over. It's all a bunch of hype. I know I don't want to substitute my large 24" (soon to be 27") monitor for a little 3.5" screen on a smartphone. Not to mention the fact that if something goes wrong with the smartphone that you're shit out of luck and have to shell out $500. No thanks. I'll stick with my fast, upgradeable desktop with huge amounts of ram, space, and screen real estate along with a very low price tag, thanks anyways. People are always trying to predict the future. What they don't realize is just because you're capable of making something doesn't mean that people are going to want it.
I think the future will be full of more computers than we can imagine, but I still think we'll have desktops, laptops, smartphones, tablets, and maybe the netbook can survive (though I doubt it). At the same time though, your tabletop will be intelligent and will be able to interact with you. Medical technology will take incredible leaps through theoretical simulations that allow doctors and scientists to do thousands of unique experiments at a time without having to use humans and animals to test things on. But as for computers in our clothes....it might happen. But not to the extreme extent as described in the video. Our clothes will have simple computers that will be able to monitor things such as our health status, the time, and other very simple things that doesn't require much computing power. Or maybe we'll have that built into our smartphones too and no one will really want computers in their clothes.
The future is bright but it's not as drastic as they make it seem. People are slow to adapt and the new stuff always costs a fortune and takes a long time to become affordable enough so that people making less than seven figure incomes can afford it.