Congratulations... You've created the "Tucker Automobile" of the netbook world. And the big manufacturers aren't making something like this for the same reason they weren't making cars like the Tucker -- even after Tucker proved it was technologically & economically feasible and contained features people would want and pay for.
Why? Because they, like the auto manufacturers of that day, want to dribble out technology bit-by-bit, releasing "new technology" slowly with ever more models to sell, each having a small step of improvement. They don't want to give it all away at once, as this machine would do. It's a strategy that maximizes their profits, allows them to throttle back R&D spending, and keeps their market constantly upgrading to add that next feature.
Sony, Dell, HP, et al, here's a word to the wise: General Motors.