Blackberry, no doubt, is leading the way of containization. It means owner of the device can have multiple login while the data in different login is not shared. It's a good security measure and works best for 1 device fits all mentality (work and private). Does containization cover all of the security measures of most corporations?
Given the social networking and cloud based service, a lot of companies are trying to gather data for different purposes. How would Google deal with it?
On the other hands, given Microsoft is still popular among corporations and their knowledge and experience in corporate security. I am sure Microsoft is trying to penetrate the market in this direction.