If you stand back to view this...once the study is produced and accepted...it is only a matter of months before someone goes through the high school and college system in some state, and out-laws contact football. Maybe three years....maybe five years....but there will at least one state that makes it illegal.
At that point, it’s only a matter of a couple of years before you have most states forbidding it. Where will the NFL get young talented players? My guess is that the NFL knows that they’ve got trouble coming and will be lucky if they survive.
It’s going to be insurance companies that will eventually put the kibosh on football.