Re: The chances of a comeback are virtually certain.
@Grim Here is a reason. I'm unlucky enough I have to manage the cell service/devices in my biz unit in my spare time from my real job as developer/ERP support. We have about 35 phones here. There was a time, before Apple and Android, all we used were Blackberrys. We ran free version of BB Enterprise Server to send email for our Lotus Notes system. I personally had that first touch screen phone they had, forgot now what they even called it. It was flaky as heck. I got one for our top sales guy, he gave it back within a week and got one of the Android's on market.
One by one, every user wanted off that phone when time came they could change. Seeing as how AT&T data plan was $40 for BB use (you had to have Enterprise plan to work with email) and data plan was $26 for Android/iPhone (you can use personal plan with pushmail service for those), I encouraged the defection. Besides the data plan cost, Corp consolidate BB Enterprise Server at our hub, which put us on the paid version of that. That added an $80 license every year for every BB phone.
We now use Notes Traveler for pushmail. I know it supports iPhone, Android and Windows phones. BB, I have no idea because NO ONE has ever asked me about getting a BB phone again.
You and others keep listing all these tech reasons BB will come back in vogue. You really think my biz users give a damn about any of that and will come back? Unless those phones can teleport you from one place to another, no one is leaving the Win/Android/iPhone to go back.
You keep mentioning security. OK, maybe the CIA will require it's agents to carry BB for this reason. Does my Mom need this extra security? You are making same argument that Mac/Linux users like to throw at MS: No one is infecting our stuff with malware! Well, actually get a market share and then see what happens with that.