Timothy B. Lee:
BlackBerry eventually realized that it would need to compete effectively in the consumer market if it wanted to survive. But building consumer-friendly mobile devices wasn’t its engineers’ strong suit. And by the time BlackBerry released a modern touchscreen phone in 2010, three years after the iPhone came on the market, it had a huge deficit to make up.
While Microsoft was just far too late to the market (though you can argue they shouldn’t have been given the relative success of Windows Mobile), BlackBerry was right in the thick of it as a leader in smartphones when the iPhone hit. And they still couldn’t use that strong market position to figure it out until it was too late.
Yet another case of a strong market position actually being a weakness because it blinds and/or binds you.