Fifty-five percent is what Research in Motion’s US Market share was in 2009 — the number differs depending on the source, but nonetheless above 50% — and if you compare that with the below-five-percent figures (going as low as 1.4%) for December 2012, you’ll immediately recognize a monumental drop. Of course, key players like Android and Apple’s iOS contributed to RIM’s decrease, both platforms stealing the majority of BlackBerry users over time. Research in Motion’s recent history is quite agitated but the company that once ruled the mobile corporate world, becoming ...