Why Do Long-Haul Low-Cost Airlines Have Premium Economy Cabins?

Around a decade ago, when ultra-long-haul, extremely efficient aircraft like the Airbus A350 and the Boeing 787 entered the market, they created the conditions that could support a new kind of airline. The concept behind such a kind of airline is relatively straightforward. Still, it is the implementation of this kind of model that has been difficult to completely nail down over the years for many who have attempted to operate with this unique business strategy.