What is stupid, with Europe and the USA both planning a tax on carbon, in just a few decades the OP's wish will most likely come true, yet Australia keeps wishing for a different future.
Every side of politics has acted like complete cowards on this issue, with the Liberals the worst offenders - they pay it lip service every election then do nothing while handing out cash to the coal miners.
No amount of economic wealth is going to help once the environment has been damaged beyond repair.
There was a smear campaign in 2016 regarding a state-wide blackout, caused by severe weather affecting the distribution & transmission infrastructure. [see #1] The incumbant political party used this as an opportunity to blame the renewable generators (and state government, from the "opposite side" of politics). [see #2]
The same severe weather event would have affected any power generator.
[1] https://www.aer.gov.au/wholesale-markets/compliance-reportin... [2] https://en.wikipedia.org/wiki/2016_South_Australian_blackout...
Instead, the incumbant governments just subsidise the inumbant industries; or rather, the existing "winners". (E.g. subsidising Murdoch media, mining companies, all pulling in millions/billions in profit.)
Australia has one of the lowest rankings in terms of economic complexity [see #1]. Until the government can subsidise emerging markets, there's no reason for businesses to take risks - the low population can't support it.
Propping up existing industries will eventually be a failing strategy. When Australia's "luck" (exploitable resources) runs out, "what comes after will not be so comfortable". But there's still time to steer away from that discomfort. (Unlike the imminent ecology collapse...)
[1] https://www.aumanufacturing.com.au/astralias-low-economic-co...