Management have just about convinced themselves & the public that there is nothing special about airline pilots, that they are the same as bus drivers. On that basis they have cut pay, conditions & training almost to the bone. And they continue to this day to put downward pressure in these areas.
This accident is just an example of what can happen when you have 'bus drivers' in the front seats of an airliner. Airline pilots need training, experience & adequate rest. And they need reasonable pay & conditions, security & just a little respect for the profession.
The lesson won't be learnt though. Greed & short term thinking are major factors, but a major problem is that the new breed of 'know it all' hotshot airline management just don't know what they don't know. And they are not interested in finding out either.