This is an axiom based on observation of reality; Football is entertainment. Yes, it is a lot of things like organizational skill, organizational planning, personnel, facilities, transportation, equipment, event management, etc. The list is huge, but ultimately the entire pile of complicated stuff ends up in the intended feat of providing entertainment to an audience.
This means that the ultimate support mechanism for a football program is the willingness for the fan base to part with money to pay for the entertainment presented. There are several ‘revenue streams’ for this remuneration; kitsch (licensed products), boob tube (Television advertising dollars), Gate (stadium attendance), and booster club donations (behind the scenes and above board).