These are not features offered by other smartphone makers who operate in different ways. Apple’s “buy more apps” approach has left its platform confined to consumers, and Blackberry’s traditional mobile approach has become dated and unpopular with their market share dropping month on month, especially as they try harder to consumerise their platform. Finally Android’s security and malware problems are keeping Google’s OS firmly away from the Enterprise.
I'm not so sure about that last nod towards Google, but there's plenty food for thought here.