In the case of Australia, they've had their taste of what Chinese money can bring: entire billion dollar sectors dependant on Chinese money: real estate, education, tourism etc.It's a double edged sword. Chinese tourists gives China leverage when it comes to politics and negotiations. It means China can play the "do this or I'll pull out my tourists" card
The future is not going to look pretty for Australia's economy and since Australia is led by white anglo chauvinists there is going to plenty of budget cuts and economic pain to go around. Not even US investors are going to replace the role of Chinese money since US investment is already oversaturated in Australia. Every major Australian company is US owned.
Makes sense though; Australia is CIA owned, better that the CIA's own fiefdom should bear the brunt of China's economic warfare.