Sad but it was inevitable as they were too ignorant to provide a touch type keyboard version. Most people will not buy a full PC that limits the input to just two fingers. They had 8 years of attempts and the sales prove people want a normal keyboard. They should have made it a touch type clamshell instead.
The biggest advantage of a non-clamshell design is that you can use it while you're standing (try typing on a netbook while you're standing) Who uses a computer while they're standing? Healthcare professionals (especially those who work in hospitals). So, I think the OQO had potential, but it was simply too expensive.