Reliant on people's donating money because they want to see X team beat Y and Z teams, getting basically nothing else out of the deal.

NFL says gives us an obscene amount of money and you get a ticket to watch "your" team.

CFB says gives us money and you get a ticket to watch "your" team, but please also give us money so we can pay our coach another million dollars and put OLED screens in the players' lockers instead of peasant LCD screens. Also players want a slide and a barbershop for their exclusive use. And people enthusiastically give them the requested money.