"During the announcement, T-Mobile’s John Legere assured the audience that their initial picks for streaming services wasn’t any sort of competitive/business move. Rather, it was a matter of technical implementation. They’ve got to manually configure the network to whitelist each service’s myriad data sources, so they picked just eight to start. The goal, Legere says, is to include “every music streaming service” in the program; moving forward, they’ll invite customers to vote on which services get added next."
http://techcrunch.com/2014/06/18/t-mobile-stops-counting-dat...