One of the more interesting things to come out of the Blackberry 10 Jam keynote is that Rim says they’re prepared to guarantee a $10k first year for apps submitted to the BB App World. As you would guess, there are conditions to this deal and I’ll let Crackberry and The Verge expound.
Even Android struggled with luring developers to their ecosystem for the first few years. I can only imagine the battle Rim and Microsoft will face to bring them to their respective platforms. It may not work, but this seems like a good try.