Subscriber giants are called this for a reason, and must use their subscriber-base to effect a change in consumer behaviour.

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The new company--to be called Sprint Nextel --will boast a particularly strong base of corporate customers, and a total subscriber base of around 40 million customers.

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Overland Park, Kansas-based Sprint, which sells service on a technology called WiMax, has a two-year head start on 4G that it has used to stem subscriber defections and revenue declines.

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