Well...that was an expensive lesson for the commercial aircraft industry in general and for Airbus in particular. I’ve worked in the commercial aircraft industry for over 30 years and I’ve never seen an airframe program that began with so much industry hype, had so much initial design/manufacturing problems and then retired so soon. The first A380 entered service at the end of 2007. In comparison the B747 entered service in Jan, 1970. Its good to know for certain what NOT to do I ‘spose.
Some of the problems, like the wiring harness, may have been just bad luck.
And the more complex the plan, the more likely to occur.