I realize you closed this request a couple of years ago, but with the new Passport, and your entry into Canada, you will be experiencing a large wave of BBOS users.
Now is the time to impress us!
Otherwise, you'll find that a lot of Canadians use BB phones with native apps for Rdio, Songza, Di radio etc...
We do have alternatives.
Lots of people who would love a Spotify app on the BlackBerry 10. At this moment it is not on Spotifys todo list. This doesn't mean that it won't be added in the future.
I will mark this suggestion as "Case Closed" as it is not really an idea, but a request.
I would recommend adding your kudos, and support in the original idea. New updates will be posted in the same idea post too.