I have a BlackBerry classic along with a Mate 8 and let's just say that my on-screen keyboard swiping skillz outshines my physical keyboard by 4-word-to-1. I can also modify the vertical and horizontal dimension of the on-screen keyboard which makes it A LOT easier to swipe if you have a small finger or big finger.
This is what happens when companies refuse to buck the trend and simply follow their clueless/die-hard fans down into the rabbit hole, all parties lose.
BlackBerry's problems were many. Arguably, it all started on January 9th, 2007... instead of seeing the iPhone and realizing that the BlackBerry needed an immediate overhaul, the company made excuses and focused on grafting touch on top of its ancient tech (see: the Storm). There was eventually confirmation of a rumor that I heard first-hand -- that BlackBerry considered the iPhone "impossible" until it got to dissect one after launch, which shows just how imperceptive the company was.
Management was also a serious problem. There was a pretty heavy bureaucracy at BlackBerry for the longest time, and that made any rapid turnarounds difficult.
The most important factor to me: the intransigence of Balsillie, Lazaridis and even Heins to some degree. There really was a "they'll come crawling back" mentality that acted as if BlackBerry had perfected the smartphone, and that anything other than a business-focused device with a hardware keyboard was little more than a fad. It didn't realize that a hardware keyboard wasn't necessary anymore, and that its business features could eventually be matched or beaten.
It's not so much a question of refusing to buck the trend as refusing to accept that its trend had been bucked.