Blackberry's remaining users are a rounding error. If Blackberry could make money selling phones to their remaining users they wouldn't be thinking of making Android devices. Blackberry would need to find some way to sell Android phones to people who are using either Android or iOS devices now or to people who are still using feature phones. Either way, I don't think that the keyboard is the big differentiator that will let them do better than LG or Sony or HTC, or even help them catch up to those.