The long term growth of air travel means there is space for the A380 as well as the 77X...especially when the latter is only a paper aeroplane.
If a certain Big Airline's experience of replacing 3 x 744 a day on LHR-LAX with 2 x A380 - with increased premium capacity, constant economy capacity and vastly reduced costs - you might see some more orders in the not too distant future.
As ever with large jets, if you fill them you'll make a fortune, if you don't...