Isn't this the best time for Nokia to make Ubuntu Phones? I think so.
Ubuntu and Nokia can make a good fit, under the current circumstances.
Nokia maybe can now come back strongly, instead of believing in a closed ecosystem like windows, which is not going anywhere.
That ship has sailed for Nokia, and it looks like it will disband next year.
I could see Samsung, HTC, Huawei and others using it Ubuntu as an alternative to Android, though, instead of WP8 and Tizen, especially since Canonical says that if their devices work with Android, it's trivial to make them work with Ubuntu OS.
I assume that whatever contract they have with Microsoft would make that very difficult.
There's not really any evidence that this will sell more than Windows Phone does anyway, I kind of suspect that canonical would be thrilled if this got the same sort of sales that Windows Phone does.
They are already tainted with Windows. They probably gone through a good round of scapegoating blaming Qt and its previous Linux based phone for its failure and Canonical / Ubuntu probably wouldn't want to be associated with Nokia at this point as it will leave a bad taste in developer's mouths.
Ubuntu and Nokia can make a good fit, under the current circumstances. Nokia maybe can now come back strongly, instead of believing in a closed ecosystem like windows, which is not going anywhere.