There is more point to point traffic, even narrowbodies have got transatlantic range these days and many continental airports are ready to grow. Amsterdam has the new runway and expands the terminal, Frankfurt is getting ready with T3, Zürich get's more Swiss widebodies just to name a few. Just BER seems to be of no concern for some long time to come.
But some LHR expansion debate over 50 years feels almost "german". You had a third runway that got never used hadn't you?