Words like détente and duopoly are regularly used by consumers and industry skeptics to describe the telecom sector, which is dominated by giants AT&T (T) and Verizon (VZ), as second tier players like Sprint (S), MetroPCS (PCS), Leap Wireless (LEAP) and T-Mobile USA struggle.Despite moving to usage-based data pricing in 2011, AT&T and Verizon continue to add to their market dominance. But
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