Interesting article regards the demise of the Aussie in T20 cricket, having now failed to reach the semi final stages three competitions in a row. Lack of preparation with the Big Bash having preferred treatment and concentration on red ball Ashes . So the T20 became somewhat an afterthought.
The adjustment in the condition of wickets in India and Sri Lanka also is taken into account, with power hitting better on Indian wickets with Sri Lanka requiring more supple requirements.
Or maybe things just didn't quite go their way on those occasions?
T20 is a very volatile format and I don't think too deep analysis tends to age well.
You only have to look at the T20 Blast and how sides' fortunes can fluctuate dramatically from one year to the next, compared with the relative stability of the County Championship.
Look at Hampshire, who won it in 2022 and got to the quarters in 2023 only to have an inexplicable horror show in 2024 but then got back to the final in 2025.
Or Gloucestershire who came from nowhere to win in 2024 but collapsed to being nobodies again in 2025.
So Australia could very well rock up and win the next one.
That's not saying skill doesn't win T20 games, it does, but there's a lot of luck, or shall we say how it goes on the day, masquerading as skill.