Should RIM release more than one BlackBerry model at a time?

Robb Dunewood argues that the three or four variants of each released BlackBerry model really amount to pretty much the same thing. Could RIM capture an even bigger slice of the worldwide market if they just released more models? "Now, to be fair, the BlackBerry is in a subcategory of all phones, smartphones, of which it is number one. I have to ask the question, though, would the BlackBerry enjoy a bigger piece of the pie if it had more variety. There has to be a tipping point where the number of device sales and revenue increases with an increase in the number of styles and form factors that come out at a particular time," he writes. Article

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