Chickens coming home to roost
MOL's model relies on opening up travel to those who previously wouldn't have travelled and not having competition on their routes. They are rapidly running out of "out of the way" places to go to, and are starting to face competition. Meanwhile, those who travel regularly would rather pay extra than be treated with contempt by MOL.
He has massively over-ordered planes and doesn't have enough people to fill them. It is the beginning of the end of Ryanair's ridiculous model of trying to build an airline whilst treating their customers like sh#t.
If MOL has found a new model which makes grounded airplanes profitable, he is about to become a billionaire.