security maybe good if one was to do work on it. Are you expecting the general public to use their phones to type out a full work report? Most people are happy that they can use their phone for emails, twitters, some gamings, internet surfing, music, and phone. It doesn't matter what kind of jobs they have; I know people in top level jobs and still use their phones for those purposes I just mentioned.
Thus, why is the need for high security? Google doesn't have high security and apple doesn't either, but why are their phones selling like hotcakes? Simply because they are user friendly and they do what I mentioned. BB10 lookes confusing with all the "flow and hub". It will not make 1 million sells.