DisplaySearch has a relatively straightforward way of setting a notebook apart from a netbook: they find everything with a screen size of 12.1" and higher a normal notebook. Taking that into account, this table shows (in great detail) what they believe the notebook market will look like in 2009:
Source: DisplaySearch
DisplaySearch believes that a major driving force behind the rapid adoption of netbooks are mobile carriers, who aggressively offer contracts with mobile internet and netbooks attached. They claim that the smartphone market is becoming ever more saturated, making it harder for carriers to earn a decent profit with smartphones.
Normal notebook sales suffer from the popularity of netbooks, but also because of reduced demand for normal notebooks from the enterprise market, who have been cutting budgets due to the economic crisis. If Windows 7's release comes at a time of economic recovery, DisplaySearch believes that normal notebook sales will quickly gather momentum again.
Again, it seems like netbook sales are the driving force of the notebook market, but sadly, this does cut into the margins of manufacturers, since those are lower on netbooks than on normal notebooks.



