RIM continues to increase its installed base year over year (including 2011--they're market share has decreased but only because the smart phone market as a whole has increased in size), they remain very profitable, making about 5 billiion per quarter, and have a stable of ip including the fastest, most secure and lowest power consuming push email and IM software on the market. The Playbook and BB 10 devices will support bb os 10 apps and the majority of Android software over blackberry appworld which screens out malware and virus android apps that are becoming increasingly prevalent on samsung and other android handset vendors phones.
We have yet to see how they execute with bb 10, so it would not be prudent to over speculate on the timeline of their possible demise.
But somehow people disregard all of this and assuredly proclaim that they will be out of business in a couple of months. The mobile market is far too volatile. 1 year is 4 internet years. An incredibly lrge amount of key factors can and do routinely change in such a long stretch of time.