What a turnover by Aussies, India is really unlucky in this tournament. They have scored almost 300+ in each game but still lost by 4-0, it can be 5-0 as well. Many things to learn and rectify the mistakes, they should work on their weak bowling. Dhoni is totally failed in this tournament, his wrong decisions and poor batting are also one of the reason for India's humiliating defeat.
Not unlucky but just poor play, especially from their bowlers and they literally have no middle order batsmen, the first few from the top play well but if they collapse no one is reliable enough to even keep their wickets let alone make any runs. Well deserved victory for Australia, their bowlers can bat better than some of the Indian batters, which is a shame.
Agreed with you, I said unlucky because their tons goes in vain again. Indian middle order batsman and tailenders are not able to handle the situation. But there is nothing about shame, it does happen in cricket. You can look at South Africa, they were the no 1 side in test cricket but then India and England beats them badly.