Q. wrote:And massive levels of corporate tax evasion.
Fact is Labor suffered from a huge drop in tax receipts, and it's getting worse under the Coalition.
Quite true.
Unfortunately one of the by-products of internationalisation of trade is the ability for corporations to avoid tax.
Years ago (1980s) when debating economics with a Democrat who espoused a
"social wage" to be paid for by
"making big companies pay their tax" I ran up a scenario in seconds that involved manufacturing in somewhere like Indonesia, selling in the developed world, and making all your profits in your Liberian shipping line, He had no solution for that one.
Since tariffs on imports are unfashionable I proposed a theoretical solution - a "customs processing levy" on imported goods and a hefty GST on top of that - both of which would be unavoidable in those circumstances.