Yes, they're a chance if they start marketing properly. They have a very strong security message for corporates, and that message is only getting stronger post-Snowden.
For corporate (not private) use, BB is the most secure phone/e-mail platform, and that's gotta be worth a lot when phones of at least two national leaders are getting hacked. For non-corporate use, they're not secure because they allow governments of India, at least, to spy on their customers.
If senior executives travel to (say) China, they'd have to be idiots to prefer iPhone or Android to BB. They should know they'll be spied on and they should know that the Chinese (and others) have no qualms using whatever information they can get for commercial gain.
This is the message they should be pushing.