College football didn't start in the 1980s. In the early years and I would say up to the 70's/80's, there was parity but fewer teams playing. Before all the TV money got involved, most of these schools were on a level playing field with finances, facilities, staffs, etc.
The people who think NIL is going to level the playing field is laughable. First, the boosters at Miami and Texas A&M paying a boat load for players isn't equating to wins.
Second, NIL and portal just means excellent players at lesser schools/ lower levels are gonna get plucked by the big boys (see Jahmir Gibbs leaving Ga Tech for Bama, Hartman leaving Wake for ND). None of this will equate to Duke, Va Tech, and Pitt getting more dudes to complete with FSU, Ohio State and Georgia.