The U.S consumer benefits regardless. if the German taxpayer or German customer of a monopoly subsidizes the U.S consumer that is a German market issue. Your s

The U.S consumer benefits regardless. if the German taxpayer or German customer of a monopoly subsidizes the U.S consumer that is a German market issue. Your second point has some merit though: that once they gain significant market share in the U.S, T-mobile can become anti-customer. But T-mobile's prepaid plans and now this international texting gambit might force other carriers to follow suit before T-mobile gets to that significant market share. At that point T-mobile cannot afford to become anti-customer because other carriers would have started matching T-mobile's pro-customer offers in the meantime.