The Dutch showed alot of spine. They were a better team than how they performed in the tournament. But lack of exposure + game-time are major factors that do affect your performance. And unfortunately, that is not something their players can control. Some would say they were unlucky at points but I would say that falls under lack of temperament, something they are not allowed to improve because of obvious constraints.
Still, not a bad showing by them and I very much hope they are placed in South Africa's group in the next World Cup.