Maemo platform suffers from the fact that that it is a third platform in Nokia offering. There is S60, then S40, [big blank here] and then there is Maemo.
It will get even worse with Maemo 6 and the upcoming "unified Qt-based experience".

Maemo needs a second company that will take an opportunity (and risk) of making Maemo it's main and only operating system.
I am excited by the Chinese devices powered by Maemo. I surely hope that we will see another HTC-like story on Taiwan etc. - but this time with Maemo powered devices.