Hello @greenrun
When it comes to Nokia and Blackberry i don't think that these Companies will break through again.
The biggest disconnect for brands is when they fail to acknowledge change and move towards it. They become too romantic of how they make their Money and fail to innovate.
Another reasons for this is that Companies place more emphasis on Profits and they usually refuse to innovate if it involves a resuction in Profits due to research and more workers, but they will eventually lose out on the Long run .
They really thought it was not a threat. They are already the market leader. Why worry, I'd admit I was a serious Nokia fan. Very faithful, but the very first day I used an Android, I found the Nokia's Symbian OS to be very lacking in features. That was the beginning of my move to Android. I later gave out my Symbian phone and it was Android phone all the way.
Companies that fail to innovate become obsolete
100% right on point