First - if G doesn't want to be in Aussie due to some tax, it's their 'choice' they're not forced out. Second - it doesn't matter that much where the tit-for-t

First - if G doesn't want to be in Aussie due to some tax, it's their 'choice' they're not forced out. Second - it doesn't matter that much where the tit-for-tat is - it would be existentially disastrous for Google or FB in either sense. If a corporation was 'out' of a major, regular western nation for any reason I think the CEO's job would be in serious trouble, even Zuck.