Because they weren't 15 by July 1st, 2004, even if they made the 2005 Nationals podium, Kimmie and Katy can't go to Worlds 2005. Without that important senior international exposure, they don't have much of a chance to win the 2006 OGM.
Every Ladies OGM winner has stood on the World podium before going to the Olympics (with the exception of Barbara Ann Scott in 1948--there was no World Championship in 1947 due to WW2).
In 2010, these youngsters will be polished, seasoned competitors at the peak of their skills.