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I do not think that the Australian government will not want such an event to happen. The problem will be the rest of the countries whether they will agree in being part of this event.
The government also has to prove that they are well prepared in conducting such an event and then only ICC can take the decision of organising this event. Looking at the present condition in Australia I do not think that will be an issue.
There is too much political involvement needed to conduct a tournament and majority of the time these politicians cannot agree to a simple same logic and with all these constraints involved it is not an easy job for the ICC to determine the best possible solution until every board takes the responsibility on getting the permission from their respective government and then deciding on when the tournament can take place. First the ICC can start with the Australian government about conducting the tournament.