Hmmm, having worked with children that were not avid readers in the rising fives, but have become very able in later years, I am cautious to see how this unfolds.
In Scandanavia and much of Northern Europe, as well as in the United States, children start school later in life. As a result, I believe people are more confident as the move into their teens and adulthood.
While I am a huge advocate of educational play and edutainment, performance management approaches in the ealry years can widen the gap in aspirations and potential IMHO.