I actually think this is a genius move by Blackberry. Financial dudes, CEO's, and other big wigs still use classic Blackberry's. Most I know hate iPhones/Android because of the lack of a real keyboard. These are email jockeys and text guys. They delegate shit all day long, that's their job. They could give a fuck about apps as long as they can use it to do their job and check their bank accounts.
Until now Blackberry (or anyone for that matter) didn't have an upgrade path for these users, but now they do. Now, on to profit margins. The people who buy these could give a shit about specs. They just need it to be reliable and fast. So Blackberry stuffs some hardware from 3 years ago into it, tops it with the BBOS 10 and stuffs it into a case designed in 1998 and viola! Seriously I bet these things cost Blackberry less than $100 to manufacture.
Loyal customer base + pent up demand + high profit margin = real money in the bank