At the most they could give free server transfers when the EU datacentre is ready, they could restrict it to only moving to an EU world if they wished.

As it is I have no plans to move, I don't want to leave my friends behind, I'm doubtful I could get a better connection if they put the servers somewhere silly like the edge of eastern europe (for the best connection for the whole continent) and I don't need a better connection, I've got a better connection to the canadian servers than half of america (a single ocean is better than going through the whole of america).

Everyone is assuming the EU servers will be placed in the centre of western europe.