The company formerly known as Research In Motion—which decided to cut right to the proverbial chase and rename itself 'BlackBerry'—launched its much-anticipated BlackBerry 10 operating system at a high-profile event in New York City Jan. 30. Meanwhile, Microsoft is still dumping tons of money and effort into Windows Phone. But can either smartphone OS — or another player, for that matter — successfully challenge Apple iOS and Google Android, which one research firm estimated as running on 92 percent of smartphonesshipped in the fourth quarter of 2012? What would it take for any company to launch that sort of successful effort?