I mean, in fairness they did spend several key years post-2007 with their head in the sand pretending that iPhone didn't exist or wasn't a threat and running the "tools not toys" ad campaign.
It was really the rise of BYOD policies that killed blackberry I think— they had enthusiastic fans but it was a pretty small group relative to those who would pick the iPhone given a choice.
I worked in IT at Gartner at the time and by 2010 there was tons of internal pressure to allow people to use iPhones and Androids instead of company-issued BlackBerries.
If RIM was willing to downsize and continue serving the niche of users that just want a good keyboard for messaging and don't care about content consumption or apps, they could still be around today making products for that niche. But things don't really work that way in a market that only rewards perpetual growth.
It was really the rise of BYOD policies that killed blackberry I think— they had enthusiastic fans but it was a pretty small group relative to those who would pick the iPhone given a choice.