BlackBerry has made blunder after embarrassing blunder. Even in my very first day in sales I was told "sell customers the benefits, not the features" and BlackBerry never got this. They'd reel off stats and features, while Apple was nailing the "this will improve your life" advertising.
BlackBerry never realised that it didn't achieve its former huge market share with expensive premium handsets, it did them through the bargain plastic handsets. To date there has not been an 'affordable' Qwerty BB10 device.
BB10 was always going to have a rough ride without all the apps of the competition, perhaps they could have built a simple 'converter' that translated Android apps into BB10 code (rather than running Android apps emulated on-device). It's hard to say. In many ways BB10 was a much nicer, more elegant OS than Android.