Long but good article. They point out the inflection point was when VZW asked BB to develop an iphone killer, and they came out with the BB storm.
I had that phone, and it had a nice physical design, but the OS/software was horrible, clunky, buggy and unstable. Using it was an aggravating affair and intermittent BB updates often broke other things while trying to fix something. I never went back to BB products after they foisted that crap onto customers.
The article points out after that fiasco, VZW went to Moto/Google and they came out with the original Droid. I had that too and it was much better product, I stuck with Android for five product generations, well atleast until this recent Google backdoor/datamining fiasco.
In retrospect, I am not sure BB actually realized the significance of the moment when VZW asked them to produce a flagship touchscreen product. If they did they would have spent far more resources developing the Storm and maintaining a high end product line. In effect, BB's own shortcomings gave rise to Android.