[hi19hi19]

I think the point is that, since you can't control the other 9 people in the game, all you can do is analyze your own play and see where you could have done better. Even if the game was so lost that not even Faker himself could have carried it, hell even if you played Faker-well yourself that game, there's no reason not to look inward on your own play and see where you can improve.
Then, once you have analyzed your play, you put it in the past and focus on the next game.

Assigning blame for "whose fault" it is that the loss happened is irrelevant to this.