As a person with an insurance background, I think Malcom Gladwell put a good theory forward - eventually insurance won't underwrite football due to the violence. Schools won't have it at younger ages (brain issues), High Schools might save the money (other sports), and then the pipeline to the NFL gets a lot smaller. The quality of 'on the field' product would suffer. The empire contracts, life moves on. It's not necessarily that the cultural capital will go to worthwhile things, it's simply the removal of engaging in a perceived negative.