This is why the Government are mounting a propaganda campaign to raise the GST... Tax receipts from Australian domiciled investing and trading (both capital gains and income) are plummeting as the foreign algos and shorters who pay little Australian tax take over the Australian public markets and strip company valuations and scalp Australian traders. You should see the level of shorting market wide. Unprecedented.
A GST will allow them to get revenue even after an economic collapse as people still have to buy food and heathcare.