There must have been a silent war up there in Nokia HQs in the last few years. The model we like, those with open source, hackable software with countless possibilities has been killed, and not because it didn't and couldn't deliver.
In my humble opinion there must have been a lot of ideology in the assassination of maemo. A lot of ideology, almost religion. But then maybe I'm paranoid, who knows.
And must have started way before the N900 was delivered in the market, i.e. before Jan 2010.
This left the device in an unfinished state, as we all know.
No Ovi maps, no voice dialing, no mms, no 3g videocall, say what other was lacking.
It was a war specifically against the maemo branch - these things are legacy of symbian and it seems that - at least maps - are going into wp7 nokia new devices. Maemo was ignored.
I think that Nokia didn't lack developers to do these things. But - patently - they didn't want to.

This is the reason I think the assassination of maemo was planned before, at a very high level in the company. People like Ari could give some light on this, maybe within some years from now. I hope they'll do, I want to understand.