These last few exchanges are ignoring - purposefully or not - that you're talking about 2007-2010. Back when there was no WP7/WP8 and the move from Symbian and its internal politics and overfunding were already were on the way, but not yet concrete. You're both also overlooking that Nokia, while once huge, was not gaining as much per year in regards to the then faster growth of the market.

Simply stated, Nokia kept growing, but not at the accelerated rates that iOS and Android enjoyed thus their decline in marketshare. Jumping to the lesser known/utilized mobile OS Windows Phone 7 and later WP8 didn't really help in regards to growth or marketshare. It's arguable that it dug them deeper into the situation they're now situated in - handset division sold to Microsoft for instance.

But instead, using nonsensical graphs and management arguments about something but not including everything - business is a multi-faceted endeavor and picking and choosing the pieces that support your stance is easy to do; but doesn't make it right.

Nokia was slow to turn from older Symbian/non-touch phones that featured what folks wanted on the newer touch phones and expectations. Sure, you can point to many successful Nokia products, like the N95, but folks will also remember out of memory errors. I vowed to never own a Symbian phone and that was mostly because of the fact that I just didn't like the OS. I've owned iPhones, Android phones, the N9, N900, and even a Lumia 900 and now a BB10 Z10. But in the end of the day, never a Symbian phone.

Back to my point; you guys are overlooking the overarching trends of smartphone growth and Nokia's lack of grabbing that new market with their offerings. They did well in other areas, but not well enough to continue their prior 2007 growth.

Add that to your argument, I'd consider it a well-rounded discussion instead of this tit-for-tat round of exchanges.

Just my honest opinion... carry on.