Originally Posted by
Cool Guys
On high volume routes with slot constraints operators can move from the 320/737 to A330/787 or from A330/787 to A350/777.
Agreed. There are a number of questionable assumptions on the need for the A380 and suggesting it's the only option for moving larger numbers of passengers is one of them.
Another possibility is that airlines will simply bypass the hub to hub model by operating more flights to regional airports.