What was the break even again for the 380?
The break even is 480; which won’t be for quite a few more years. But, bear in mind that the 747 has had decades. At present, sales of the 380 are ~2x that of the 747-8.
The other points to consider is that Airbus has worked out the kinks in making carbon fiber wings; as they have delivered 44 aircraft already. The fact that they have worked out this problem puts them ahead of the curve when they go to retro-fit earlier designs. If you can make a wing for the 380 out of carbon-fiber, you can do it for the 308, 310 ect.
Boeing’s Dreamliner is still effectively grounded - they haven’t gotten the composition manufacturing streamlined yet.
Because Boeing didn’t risk and innovate - they are behind the curve; in an industry that has very lean profit margins. Meanwhile, Canadian Regional Jets are cleaning up in the small jet market, and AirBus is ~2x the orders of Boeing in the big jet market.
Doesn’t take a genius to see where things are going.