netbook is dead
People wanted a 7" tiny very low power and very long battery life machine. Then consumers complained the screen was too small and it could not play HD video, and was useless for entertainment, so it got bigger and more powerful. Now, for $100 more, you can get a real notebook since their price came down.
Also, people realized netbooks did not supply enough power to use solely, you still had to own a "real" computer. Colleges banned them because they don;t run the Pro version of OS (and thus can;t join secure domains). Businesses can't use them well either. Companies tried so hard to restrict them to not eat into their profit center (business and college machines are their only real profit, most other systems are sold for very slim margins), and now many tablets can do everything or more than a netbook was intended for (not what they became). having 2 machines also meant double the software costs, double the maintenance, file syncing nightmares, and more, so double the trouble. For $100-200 more, a single machine weighing not much more than 1 lb more could handle it all. Then the 1.5lb iPad came out, synced itself, needed no other maintenance, worked with most of their stuff, and was what they wanted all along, a portable e-mail and typewriter with some web and media functions, and some idle game playability.
If netbooks stayed try as nothing more than underpowered $200 internet machines, subsidized by mobile contracts it would have been fine. As they evolved, and WiFi sprouted up everywhere, (and MiFi etc for the rest) the need for a subsidized device died, students shunned them as dd businesses, and the only people left buying them were people that could afford nothing mroe. They simply because the lowest end of the notebook line. After dealing with the sub in sub par for a year or so, everyone realized raising another $100 for a real notebook was the way to go as portabiltiy in a 11" machine was not a big enough difference to sacrifice usability.
iPad + real notebook is a FAR more realistic combination than a netbook and a PC, and about the same price, but you can't play 3D games on a netbook, and they make horrible e-readers (portrait mode has power!). When a real viable iPad alternative eventually hits the market, you;ll see numbers explode for tablets, and the atom powered netbook will cease to exist in less than 2 years.
Sales for 2011 should be under 2010 sales. Sales in 2012 will be a anomaly at best. We'll ship 100 million tablets by 2011 easy, the bulk under $350.