The logic of altering entire airport infrastructures just to meet the commercial aspirations of a few does rather escape me.
OK - so the A380 is big. But for massively expensive airport reconstruction to be required to accommodate it does seem rather presumptuous by Airbus. Although if the size of the average lard-arsed American keeps increasing, pretty soon even bankrupt-in-all-but-name American airlines (small a!) will need the A380 to haul their porky 'Passengers of size'
punters across the pond - the old 747 will be just too slimline for many of them. And the Plastic Plane in-your-dreams-liner will be wayyy too small.
But, more seriously, if demand for the A380 picks up as many expect, those airports unable to accept it will be out in the cold. A bit of a gamble to cut themselves out like that.... But if the money is spent and the A380 doesn't become a success, well - at least there will be more airport space for the rest.
On another tack - I was at FRA last week and the queues of folk waiting hours to get through the absurd US security procedures were a poor incentive for anyone ever intending to visit the place.