I don't see RIM going anywhere. They'll be smaller than their heyday, but the still offer unique products: Secure messaging communications, enterprise control of corporate devices (through BES servers), etc.
Motorola and Nokia went through similar mis-steps; yet they're still around. Smaller than before yes, but still exist.
It was only a matter of time before competing (stable) smartphone products came to market. Prior to Apple and Android-based devices, RIM had offerings from MS, Nokia (Symbian) and Palm to contend with--hardly competition.
RIM's made mistakes: Not updating their OS sooner, failing to keep up with new tech in their devices, and misjudging the popularity of tablet devices. Though you can hardly fault RIM: Who knew that Apple could take technology that's been around for at least a decade, repackage it with updated features/tech, and sell the ipad tablet like hotcakes?!
Though it could be argued that Apple--accurately--saw the interest and popularity in e-readers like the Kindle, and wanted to capitalize on that success...knowing that it wouldn't be difficult to generate sufficient content to please owners of their own tablet creation.
Either way, I don't see RIM's mistakes as terminal.
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