To be sure, there is room for a third ecosystem, especially with the weakening of Research in Motion's (RIMM) hold on the enterprise. Nokia devices could take advantage of Microsoft's success in the office to try and appeal to IT departments as an alternative to both BlackBerries and the "bring your own device" trend.
"The Windows Phone environment on Lumia devices has many of the capabilities required in a business setting," Elop told Fortune. "Microsoft provides much of the software that businesses use for office productivity like Microsoft Office."
But even Elop admitted there was still plenty of work for Nokia to do as it tries to crack the U.S. market yet again. The Lumia 900 will be out "in the coming months," although it's still not clear exactly when and (for how much) it will sell, let alone whether it can help Nokia in its battle against iOS and Android.