The main difficulty is that decision-making is ultimately concentrated not in the nations states (such as Australia), but in Rome.
Each day, the Commissioners have been pressing the Church's people to consider what might have been (and might still be) the issues underlying child abuse:- for example, clericalism; secrecy; mandatory celibacy; the seal of the confidential. 
However, there is nothing that a local Church can do to change the worldwide culture on any of these points. They all lead back to Rome, to the Vatican. 
Changing a culture is hugely difficult.
The hearings have also shown how, in some of the seminaries, there have been seminarians (and, presumably, their rectors) who have - and this is in recent years (and now) - returned to the wearing of very traditional garb, including the soutane, when outside the seminary. Not in liturgical setting, but just 'out and about'. So, for every Bishop Long, there are plenty of others pulling in a 'conservative' direction.