He helped push a dull team through a terrible group. That is not dominating. Dominating would have been raise the performance of the whole team and actually dominate every team they played in the group. Argentina got by on tough defending while waiting for a Messi moment. 1 Moment in each game does not equal domination unless you credit Messi for the Argentinian defense also. Anyone who says that Argentina is a one man team either don't know what they are talking about or they have a pro Messi-ah agenda to cloud their judgement.
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I'm really not sure how much more Messi could have done given that he was constantly marked by multiple players and they had no one getting the ball to him. The one thing he could have done would have been to finish a couple of his good chances in the final, but he didn't and that's on him, when you are the best player on earth you are expected to show it in that forum and he unfortunately didn't get it done. he had chances to put Argentina up and missed them, and he will have to live with that, by the look on his face at the end that won't be easy, maybe Argentina will field a better team in 2018 and he will get another shot, much the same as i am hoping for Brady to get at least one more shot at a lombardi before he hangs them up, and if we are lucky it will be more than one.