i actually don't think killing Maemo is the dumbest mistake.

Maemo's problem is the lack of an eco-system. there is Ovi store and then there are the handful of popoular repositories. but where is the flurry of commercial software that makes $$$ for developers? without $$ in the eco-system, it will never get big enough to justify additional investment to grow the platform. therefore, killing it is the best thing to do to limit your losses.

as emotional as i'd like to be, you have to look at this from the other perspective. with hindsight, we can be 100% correct. for now, everything is a risk and a gamble.

good luck Nokia.