Australia is not the first country to pass a law like this. Spain and France have both done some version of this as well. There's going to be a point where enough countries stand up to them that they can't just withdraw without substantially hurting their own business long-term.
I think the EU and Australia massively over estimate the amount of money their "news" links bring to google.
For google this will be a pure economics game, and when they passed the other laws Google looked at the numbers and noped out.
The same will be true for Australia.
I do not see the UK, US, or any of the emerging economies pulling this, so the EU and Australia will alone in this battle and the amount of money being demanded it seems to me most likely exceeds google profit, so they will just end the service to the nations, and blacklist the sites from search
Search will be fine because 3rd party sites will be indexed so it will be a 2 hope, and given the incestuous nature of "news" today where every story is written more or less than same on 100+ sites all over the globe I am sure people will find the news they are looking for just fine with out those sites in the index
The Eu and Australia are massively overplaying their hand
I haven't noticed any affect from Spain and France doing this. Recent earning shave been great. As long as they have the US they'll fine. And I don't see Asian ex-China and Eastern Europe pulling this any time soon
And who would be daft enough to take a niche which involves paying to advertise for others?
They can unite and tantrum all they want but it won't change the underlying reality any more than fervent demands for a "good people only" backdoor encryption won't exist.