Soccer (football) in the USA is an afterthought sport and was rejected for a very long time, but not by the people so much, but by the TV stations as they could not have commercials during the game unlike American football, Baseball, Basketball and Ice hockey. Officially American football has 60 minutes playing time with 4 quarters, but it takes about 3 hours for the game to finish, which allows TV commercial to run for two hours. Baseball can take 3 hours to midnight and even continue the next day if no one has won the game, generating lots of commercials with all that time. All the sports rules in America are designed around being able to stop the game every few minutes to allow for commercials and almost every game in on free TV or radio live, unlike soccer, which is mainly on paid TV since they cannot run traditional commercials during the 45 minutes of each half. In the early days they were cutting away from the international live soccer games for commercials. How annoying was that for the true soccer fans?
At the Professional level, American Football, Baseball, Basketball and Ice Hockey are very entertaining sports for the viewer, especially watching it on TV since some sports are very technical like American Football to see what has happened, which is why many fans for American Football and Baseball listen to the game live on their little transistor radios into their ears when at the stadium watching these games.
The draft system works well for the above 4 major sports in the USA, but doesn’t really work well for soccer. The person being drafted has a very special skill which the team drafting him can use in certain designed plays and then they come off the field after that play is over. In soccer, such special skill does not exist since all the players are playing together in one continuous game. Good talents in Soccer comes from years of experience as a team player and not a one play specialist. That is why many almost retired international soccer players are recruited into American Soccer teams to elevate the game to higher standards for big money.
American sports fans are mostly fixed in their ways though, to watch different sports at different seasons in the year as they move from one season to another with different sports. Soccer does not fit that bill for them and it is not in their DNA as it is in most parts of the world because they grow up with a soccer ball, hence those who are really interested in soccer, they need to watch it on paid TV if they are really interested by dishing out so much money when the sports most Americans really enjoy are free and live on regular TV. You just need to watch hours and hours of commercials in between plays!