A lot of good points, but one I didn't see is what will T-mobile do if the deal falls through?
$7bn IS chump change compared to what T and VZ spend annually on infrastructure.
Unless DT wants to step up their game, T-mob will muddle along as #3 or #4 until a merger with someone goes through.
And if the DOJ blocks T, they'll (probably) VZ, which leaves Sprint. Good luck with that...