Hmm. Interesting statement. But then not everyone wants to fly the North Atlantic to a country with a population as low in density as the United Staes, do they? How many 747s fly into Kennedy or Chicago? Why did airlines continue buying 744s after the advent of the A340 and the 777? Note that all of the airlines I mentioned are 744 operators with relatively young fleets. Why do CX continue to add 744s? For range or for capacity?
Don't be so focused on the North American market - it isn't the be all and end all - it is misleading and not representative of what's happening elsewhere where the vast majority of the Earth's population live.