Their product was only "better" because their competitors at the time only had crap products.
That's kind of how it works in general. Some products are superior to other, inferior, products.
Why not just say "they wouldn't have had a product that was 'better' than the competition if the competition had a superior product". So silly...
The global sales of smartphones during that time was about 1/20th of what they are now. It's easy to be the biggest fish when the pond is small.
Good effort. Now, ask yourself: 'why did the market grow?' Because the smartphone market expanded in to the consumer space. Companies started to offer their inferior products (read: ill-suited to the enterprise) with features attractive to consumers. BlackBerry faltered in the consumer market because consumers aren't interested in the features that enterprise users demanded. As the market grew, it was no surprise to see their market-share fall -- they weren't competing in the same space. (Ignoring their less-than-successful entries in to the consumer market, that is.)
Anyhow, now that the smartphone hype as all died down, I don't see any reason that BlackBerry couldn't make a strong come-back, at least in the enterprise. Someone else linked to this review which indicates that BB can still build a workhorse for the serious business user. (I'll even offer the same quote: " It was unexpectedly the best smartphone we've ever used from the perspective of taking care of business.")
Time will tell, but they've clearly started to play to their strengths. The new BlackBerry Classic has caught my eye. My battered old 8820 never let me down. A 2014 version of that just might cure my mobile woes. I doubt that I'm the only one who feels that way.