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When Rivals Merge, Think Before You Follow Suit

On October 25, 2005, the Swedish telecommunications equipment maker Ericsson announced the acquisition of key parts of Marconi’s telecom business—thus starting a wave of deals that would reshape the global industry. Many competitors responded to the news by initiating similar moves. Alcatel and Lucent merged in 2006; Nokia and Siemens combined their telecom equipment units the following year. Today Ericsson remains the undisputed market leader. The companies that tried to keep pace by launching mergers of their own not only failed to usurp Ericsson but also found themselves under assault by the only player that abstained from the M&A frenzy: the Chinese company Huawei.

A version of this article appeared in the December 2011 issue of Harvard Business Review.

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