I think coverage of the A380 often misses the point that at the time, Boeing's 747 simply had no competition, whereas all of Airbus's planes did. So Airbus pretty much had to create the A380 in order to protect its other lines from cross-subsidy by this unopposed cash-cow. And, also missing from almost all the coverage is the fact that this worked: if the A380 is struggling, the 747 is moribund or dead. Official back…
I don't think the Boeing 747 really created much of a cross-subsidy for their smaller models. Most of the major airlines with 747s had a mix of Boeing and Airbus airplanes.
At least, that is my insider's perspective from the era (95-00).