Europe is comparable, by surface and population, to United States of America, even more since it was somehow unified under the European Community. “Somehow”, because regardless the long-time efforts at the end we only have a common currency, the Euro. And it’s not even used in all the european countries…
Data roaming problems are well known to european citizens, and regardless the efforts from the European Commission, we are far away from a solution. Yet, a great lesson is coming from the USA from T-Mobile, and it show us how the european telco could already solve those problems, if they would like to better serve their customers instead of squeezing their wallets.