Clarification
So when you are talking about T-Mobile and the possibility of AT&T making inroads to Europe, I'm assuming that this would exclude T-Mobile UK? As they are now part of EE and the T-Mobile part is just a brand rather than a separate company?
I find the whole EE, Orange, T-Mobile ménage à trois a little confusing as a customer. I signed up with Orange thinking I'd get the same level of service I got from T-Mobile, alas no, I'm now counting the days I leave Orange.