Well, at least th 380 saved the weight of the outboard reversers, since the aircraft is overweight already.
We'll see how it does in service. Maybe it will garner a few more orders if it does well. It'll make a great hajj cattlecar. But, Airbus has sunk a lot of money into the thing. Don't they have a breakeven point of something like 350 aircraft, and so far it's way short of that in any kind of orders.
The A340s? The 777 has far outsold the 340. The A350 is coming into the niche way later than the 787.
Maybe Airbus can snuggle-up to the Arab sheiks and get some more orders.