There's a few issues with this.
1) That picture in no way indicates that its from T-Mobile USA. Don't forget that T-Mobile UK already sells the iPhone.
2) Even if it were - there's plenty of people that use the iPhone and/or iPods out there, including people that use an unlocked iPhone on T-Mobile, so why not sell the accessories? Accessories are very high profit items.
Oh, and seriously, oblama, its very, very obvious that your iPhone trolling is meant to just be trolling, not to actually provide value to the discussion. Give it up.