Mock them as much as you want, but RyanAir and Easyjet brought everyday short haul flying throughout Europe to the masses. And made it profitable as well.
What if they do this as well to transatlantic routes? People will love the low prices and use it. Legacy carriers will, again, suffer when the market is saturated with seats and destinations.
AirAsiaX, Scoot and the others in the AustralAsia region are a good example.
Perhaps it is time to look in depth at the incredible growth in routes, frequencies and ever bigger planes. Is it sustainable, are there enough passengers to fill all the available seats? What will happen to legacy carriers with high operating costs?