Before I coached at a Catholic school, I used to think that they recruited, too. But, as was pointed out to me at a coaches meeting once, it's sort of hard to say, "Hey, your kid is a good wrestler! Come spend $4,000 a year so he can wrestle here!"
And most Catholic school schloarship programs are set up to benefit kids who have been in that school's system since elementary school, not superstar jocks.