World Cup : A major shift for US?

I think everyone has been pretty impressed with the American performance in the World Cup. Not only the superb playing by the national team, but the interest of the fans and the American public. Only the Brazillians bought more World Cup tickets than the Americans.

For decades sport in the US has focussed on US football, baseball and basketball, but largely ignored major international team sport like football (soccer).

Is this about to change?