No, my prediction for this plane is that

1. it may never be completed
2. if it is, it will bankrupt Airbus

The 747 was planned during the 1960s when air travel was increasing at an unprecedented rate. Boeing had orders for almost 200 of them before a single plane had been delivered.

A bad recession hit just when the first planes were delivered. Planes were flying practically empty. Airlines in some cases forfeited their deposits rather than take delivery. Boeing had massive layoffs and skittered a hair's breadth away from bankruptcy.

Look what happened a few years later in the classic tri-jet fight between Lockheed and Douglas. Lockheed had to get a US government bail-out. Douglas was injured catastrophically. Nobody made a dime.

Boeing is going to eat Airbus's lunch with the stretch 747 and there is no way that Airbus is going to survive this debacle without a bail-out (more subsidies). The airlines that are buying this airplane are nuts.

If routes like JFK-NRT or LAX-NRT are so full, then they can put more planes on them.

Slots full? Not enough room in the sky to fly all the 747s needed? Nonsense. Advances in ATC including GPS are going to increase airport capacity dramatically, just as these big behemoths are being delivered.

But with these huge planes that can only fly between certain airports, airlines have no flexibility to change routes, move equipment around to meet changing demand, etc.