Plenty of schools have gone "Pay to Play" for their sports. It is pretty easy to do in districts that have higher median incomes. If the district has 20 or 30% free and reduced lunches (i.e. welfare) it is much more difficult to do. Again, it comes down to the parents and what they can give up so their kids can play the sport. My wife's family lives in Irvine, CA and they are a Play to Pay school. The median income in the area is pretty high, and at the beginning of the school year they have to pay for everything. They fill out a check list and turn it in when they register, it has dances, sports, clubs, cheerleading, everything. My wife's uncle writes a check for a 3 or 4 thousand each school year.

So, if your stance is the poor kids shouldn't get to play sports, then that makes sense.