LightSquared, the wireless-broadband company owned mostly by Harbinger and its disgruntled former investors has had a good run recently, announcing a spectrum deal with Sprint, helping with Hurricane Irene, and not actually killing anyone yet (that we know of). You might think that it’s well on its way to fulfilling its mission of increasing competition in the wireless broadband industry.

But it’s not enough for the Department of Justice, which today sued to block the proposed AT&T/T-Mobile merger. The DoJ’s suit relies on the conclusion that wireless is basically a 4-party national game (among T, VZ, S, and T-Mobile), and gives short shrift to the notion that smaller regional wireless companies can be counted on to provide competition and limit price gouging by an engorged AT&T. From the complaint:
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