I was in South America for 2 years from 2003 to 2005, and I remember talking to some people down there that really know their stuf about soccer, and in their opinion, they hoped that soccer never got big in the United States.
The reason: because we dominate in almost every other sport in the world. I was in Chile, and those people celebrated their first Golm Medal ever when Nicolas Massu won the tennis gold, while like always, we smacked people around in Athens with 40+ golds. THe reason is of course because we in the U.S. put more emphasis on sports than anyone else in the world, and we spend more money to train our athletes to become the best.
One of the coaches of a minor league soccer team down there told me that if the U.S. were to really make a serious commitment to support and groom soccer talent in the U.S., then they'd become a power like Brazil because of before-mentioned facitilities the U.S. has to train world-class athletes.
It's unfortunate we got put in the group of death in this year's World Cup because we aren't ready for that kind of hype and expectation. We're still trying to find an identity, and hopefully 2010 in South Africa will yield a better result.