Forecasts of the global Airbus market of 2000 predicted that 1,235 "large aircraft" would be delivered to customers between 2000 and 2019. But as of January 2019, Airbus had received 313 orders still and delivered only 234 aircraft.  The company's high goal was quickly undermined by the arrival of more fuel-friendly offers, such as the Airbus A350 or the Boeing 787 Dreamliner.
The smaller aircraft were lighter and could be managed more efficiently in anticipation of a staggering increase in passengers, the journey did not materialize. It was also discovered that very few routes could make the A380 work at full capacity.
It seems that timing was a problem. While the A380 hit the tracks of the world, a worldwide liberalization of flight routes known as "Open Skies" was under way. This allowed the airlines to downsize their planes and fly more regularly.
Added to this is the increase in long-range flight. Airlines have asked Boeing and Airbus to propose aircraft that can transport passengers from one part of the world without stopping.