It is surely premature to post the obsequies for the A380. At worst, it was a little early, just as the 747 was early in its day.
Indeed, the 747 production collapsed from around 100/yr to about 20/yr, so the A380 has been managed much more prudently than its predecessor.
747 production peaked at 90 the first full year of production. Clearly, there was a lot of pent up demand. After that 747 annual production has averaged well under half that and often one fourth that rate. It took over three decades to deliver 1,200 747s and Boeing had that market niche all to itself. Despite that history, Airbus predicted they would deliver 1,200 A380s in just one decade despite its market niche being smaller. What you describe as superior "management" of the A380 program was simple market forces. A380 production rate has been very low because sales have been very slow.