Yeah the virus is taking its toll on the world economy however opening up now seems to be a bad decision as the cases are growing out of control now even worse now then when it started. Australia is starting to open up just when the winter season is starting so I don't know how this will go and if there is a second wave here then we could say goodbye to the T20 world cup being played this year.
There will be at least one major event this year. Either the IPL, or the T20 World Cup. Else many of the cricket boards will go bankrupt. So my guess is that the ICC will try its best to conduct the World Cup. Even if the Australian government demand 2 weeks of mandatory quarantine, I guess the cricket boards will agree to that. As a last resort, ICC may move the tournament to some other country in case they don't get the permission from the Australian government.