TMobile is a real 3rd player. AT&T and Verizon are just happy if their net adds in a year are positive vs TMobile which is adding a million+ every quarter for past 10 quarters.
This makes me wonder if those advantages of scale aren't greater than I thought, and maybe the merger would be beneficial.
But as a great admirer of what T-Mobile has done, and a since-voicestream customer, I'd hate to lose their scrappy underdog nature.