Maemo was right there at the same time?
Nokia had a "means to an end" type of perspective to software, it was all made to be basically disposable and they didn't have great "steward of the platform" type of effort.
Also, if we take a gander at the timelines, unfortunately QT and Maemo were happening in parallel, and of course Maemo was based on GTK. (But QT was still a Nokia proprietary tech back then.) Right hand not knowing what the left hand was doing etc.
Not that any of this means anything, just felt that this was all relevant.
It's weird because my whole point is that the freedesktop mentality means no one company ever is that important to the device. And your point is that Nokia was terrible at Maemo. Yes but? Yes but: it didn't really matter. The ecosystem was incredible, intense, vibrant. If you leave the door open, people will do amazing things with your platform. And even if the company burns the platform, burns the ships, a lot of people will still probably spent a decade being vociferously dedicated to the platform. https://maemo-freak.com/community/