Exactly they made an excellent decision by giving the first turn to Indian team. Australia tried well and collect the main wickets of Indian team. And made pressure on Indian team. And restricted them under 250 runs.
I really appreciate the batting line of Australia and the management of the batsman when they looked they are loosing the matches fastly. India was giving first overs to the top bowlers means the Bumrah and Sami were bowling and they collected 3 wickets in first 7 overs. After that Australia waited and hold the wickets like Travis Head was playing well. When they saw top bowlers are not coming now so they started to make runs. After that we can see Travis Head made century and Australia won the match. And the World Cup too.
In the whole Australian batting I didn't notice a single time that the match were on the side of Indian Team because I have seen the match were only in the hands of Australia Team as you have also seen that. Just in the first 10 overs I have seen when the 3 wickets of Australia falls then may be there was a condition in which they wants to regain themselves but no change after that I have seen in the Australia batting till the end of the game.
BTW great bowling from the Indian skippers if they made some runs then they can easily win the match but there runs were very less against the team which is Australia and which can also chase huge targets many times.