The value of them is less than 1 million WinMo phone users, when those quarter billion people replace their phones if Nokia doesn't have a compelling offer they will lose them to competitors. The article looks to the past rather than the future. We are on the brink of a revolution in computing, it's 1984 out there. Looking to the past will not give you answers as to the future right now. Nokia was once a tire company and before that a pulp mill (Nokian still makes the best winter tires), if anyone has the courage and conviction to reinvent themselves it's Nokia.
Symbian is sold on low margins. If Nokia was doing so well on Symbian why did they replace their CEO?
Symbian may have been a smart phone platform in 2005, but it is no longer. I haven't seen anything impressive on Symbian, and of the features that Symbian does have that others don't I don't see anything compelling enough to give up the App Store. iOS / Android / WinPhone 7 have mind share, and Blackberry has the corporate market which is kind of like IE, you'd like to ignore it but there are simply too damn many people willing to fork over cash to do it.