RIM is failing hard in the US. The stock price is plummeting and they have no decent forward-looking products. Playbook was a fiasco and their whole future lineup is recycled.... not to mention the other manufacturers are stealing their enterprise milkshake. But they do very well in the developing world because of low cost internet offerings... hence the popularity here in SA.
With offerings like 8.ta's, Cell C it's only a matter of time RIM starts biting the dust here in SA. For instance Cell Cs promo R50 recharge gives you 500MB (writing under correction) will make more people buy any smart-phone knowing that they hardly spend more than 500MB on their devices and there won't be any limitation in terms of browsing youtube as is the case with BIS. IMHO