A someone who has coached at several different sports soccer isn't the only one with blowouts, you just notice more because that's what your tuned into, lots of games reported here. In the other sports the scores are generally reported to the paper for public consumption and as a coach you're reluctant to call the paper and publish a blowout.
Also I will say the clubs in the area are doing a good job trying to help poorer kids get involved by covering fees. However its the "hidden costs" that keep poorer kids from plying and clubs really can't do much about, things like rides to practice or across state lines for weekend matches. Many of the poorer kids have no rides and therefore can't play.