I wrote it in the Coronavirus thread, but one thing people aren't taking into the count are the SAs:
The problem with that is you can't force kids to play, and I highly doubt colleges want the PR nightmare of forcing kids to play or pulling scholarships. If the virus is still around, and somehow kids make it through Fall camp without become vectors and spreading throughout the team, the last thing a college or the NCAA wants is a game getting cancelled because the the star QB or RB got sick because they caught it from their teammates. How do you play when the entire OL and the QBs can't play because they're being quarantined at home? Or worst case, the entire team gets infected with the virus and one or two of the kids dies because they had underlying problems that haven't been identified yet but the virus made it worse and led to their deaths. Remember when AJ Gray had to quit the team because he had a heart condition they didn't find until later in his career? No one wants a tragedy they could have avoided, at least from a PR standpoint.
All it will take is an infection to run rampant throughout one team to shut it down for everyone.