[swarmee]

One, the high school player has no effective value. He is just a college recruit. It isn't until he gets to college and proves himself that he becomes an NFL prospect, where there is a shot to get paid.
The NCAA does not just cover CFB and MBB; it covers over 40 amateur sports. The money the schools take in on football cover the expenses (mostly) of the other 15-39 sports that a college plays. Remove the income stream from football, and 10 sports at some schools would be immediately shuttered, leading many with scholarships to have no team to play for. You saw this 10 years ago when colleges were *finally* becoming compliant with the Title IX regs that were published in the 1970s.
As well, allowing any college player to sign autographs for money now becomes a Boone Pickens/Nike/Under Armour situation. Oklahoma State, Oregon, and Maryland have the most powerful boosters with deep pockets, and promising a high school player that he'll be able to sign $100K autographs while in college at any of these schools makes it impossible to even attempt a leveled playing field for recruiting.

I think the NCAA will fail/be replaced for many of these reasons, but IMO the goals of the student-athlete and amateur athletics is sound. If the NFL had the balls to start up their own minor leagues and pay HS players $20-30K to play in front of empty stadiums, then we wouldn't be having this discussion. There would be a place for non-college students to play in the US without having to pretend to be a student, but then, they wouldn't be "getting what they deserve" either. There's no demand for a minor league NFL, but that's the only real way to fix college football. I just think that you take these kids out of the college they're playing for, and their football playing ability below the NFL has very little value. We know that's true for minor league baseball players, where many have to live on $20K for a season.