Funny how they were still selling quite a lot of them until Elop came around.
And RIM were selling quite a lot of Blackberries until it was too late.
FYI - All those Symbian devs and their Symbian apps had a migration path from Symbian to Maemo/MeeGo.
That's what the powerpoint said. In practice, there were... issues.
Also Nokia didn't have the same issue BB had in having a central network that was essential to the platform and have a major crash that took weeks to fix and caused headaches for their customers.
Nokia had another issue: being the company that allowed the N97 to be released. That was in 2009, years after iPhone was on the market. All that happened after was, in essence, karmic justice.
In 2010 MeeGo wasn't out. It was just about to be released when Elop wrote the "burning platform" memo; and during the presentation to the press he stood up on stage and said "We're not doing this; look I have another one running Windows Phone and that is our future" - intentially sabotaging it before it even hit market.
Your time window for "just about to be released" must stretch for half a year.
And, I'm afraid, your description of a presentation has no basis in documented reality. It was known since February that Nokia is pivoting towards Windows Phone and everybody knew that the N9 was a dead end. Moreover, it wasn't ever meant to be a proper MeeGo device. It was fucked up by internal politics long before Elop came on stage.
Yet, as others have pointed out, with no marketing the MeeGo Phone outsold the Lumias wherever they were both sold in the same markets - and not by small margins - by 3:1 ratios.
I'm sorry to see you believe in a myth with no credible evidence whatsoever.