I sort of disagree, I think netbooks took over for good. The first issue is that Microsoft fought tooth and nail against these systems because they didn't carry Windows. So they force manufacturers to switch to windows even if the hardware was slow, also other manufacturers jump into schools with the XO and the Intel proposition. Finally the hybrid computers started coming out, and right now they still have the surface and most tablets still have the netbook stage of a tablet being used like a netbook. Even the DEX from phones also feel like a netbook idea inspiration.
Even the Google Chromebook was also an interation of the netbook idea and the Intel NUC which eventually became Smart TVs as computers.