Jesse Hicks has produced a phenomenally detailed overview of the rise and fall of RIM for The Verge. Outlining various landmarks, the disastrous PlayBook, and the abdication of the former co-CEOs, Hicks paints a dire picture of the once great company.
Hicks concludes the article by citing a poignant, foreshadowing statement made by Apple's late CEO:
A final analysis comes from the man whose company pulled the rug out from under RIM in 2007. Speaking in late 2010, he said, "They must move beyond their comfort area into the unfamiliar territory in trying to become a software platform company. I think it's going to be a challenge for them to create a competitive platform and to convince developers to create apps for yet a third platform after iOS and Android. With 300,000 apps on Apple's app store RIM has a high mountain ahead of them to climb."
That man, of course, was Steve Jobs.
Definitely worth the read.