Haha, if in doubt, go down the conspiracy theory route.
MeeGo was a *brand* which never really got beyond the PR releases, conference swag, and half baked compliance documents, to producing tangible technology. The decision to form MeeGo from Moblin and Maemo was technically ill informed and lacking in the most basic understanding of the two platforms. The profound incompatibility between the two meant that while either Moblin or Maemo were viable platforms in their own right, MeeGo never was, and so it's not very surprising the promised platform (as opposed to the brand) never materialized; what was shipping under the MeeGo brand (N9; 'Moblin aka MeeGo' Netbook) were essentially two different, incompatible (and discontinued) platforms.
The Nokia decision to pull the plug on its MeeGo involvement was not only perfectly rational, it would have been managerially irresponsible not to. If anything is irrational in the MeeGo story, it is both Nokia and Intel thinking it was a good idea to start with.