Yeah I don't agree with the tone of this comment but the substance is correct. I didn't own a Nokia phone, so I can't speak to that. But Blackberry died because their phones just plain sucked. Even before the modern smartphone era they were unpleasant to use, but at least they were enabling something that nobody else did. But once the iPhone came along (and Android after that), they had competitors who were flat out better than them in every way.
And even that wouldn't have necessarily killed them, if they had adapted quickly to make this new kind of phone. But instead they made the Blackberry Storm as a "hey we can do this touchscreen thing too", but crippled it by giving it a resistive touchscreen which was incredibly unpleasant to use relative to the competition. And iirc they still insisted on tying it to BES, even though their competitors offered an email experience which Just Worked without having to use RIM's server. It seemed (from the outside to be fair) like RIM refused to recognize that the competition had blown them out of the water, so instead of pivoting to catch up they doggedly tried to offer "what we had before, but with grudging minimal concessions to the things our customers want". But that was never going to work, because customers had never liked their original model to begin with. They liked what it enabled for them, but once competitors could offer the same benefits with a more pleasant to use interface, it was over for that model.
