Sprint executives must be consuming antacids by the barrel about now. Not only is the carrier a mere footnote when U.S. wireless providers are mentioned, but today's agreement between T-Mobile and MetroPCS could put on life-support Sprint Nextel's only real market: inexpensive prepaid cell service.
Until today, when the two carriers announced they'd merge, T-Mobile was known as the carrier without an iPhone and was left at the altar after a marriage to AT&T was derailed by federal regulatory concerns. As for Metro-PCS, it was a regional carrier barely on anyone's radar. Now, however, the combined companies (if the merger is approved) will boast 43 million subscribers, closing in on Sprint's 56 million...