It sounds to me as if you're confusing open-source with open-core. There is a significant difference, and Nokia provided us with open-core in Maemo and it's reasonable to see why it's failed.

http://blogs.computerworlduk.com/sim...-you/index.htm
http://lawandlifesiliconvalley.com/blog/?p=485
http://blogs.gartner.com/brian_prent...s-new-clothes/

Open-source, wherever it manages to exist, seems to continue to move on just fine, inside and outside of the Maemo universe while Maemo (being only open-core) is dying more and more each year with every new device Nokia shoved out.