I think RIM is done honestly.
If they are still viable in 18-24 months, I'd be amazed.
It would be good if they were I think, but for no other reason than it would help fire up competition a little.
I predict the vultures will start circling RIM's carcass before 2013 is over and greedily eyeing their nice patent portfolio. The shareholders will pressure RIM to sell off it's patents so they don't lose everything and the company will be parted out, different divisions will be absorbed by other companies. In 2-3 years there will be almost no trace of them left.