Good article with a brief mention of Nebraska in it - the Nebraska of the past:
The population boom gave southern schools a recruiting advantage as Georgia, Florida, Louisiana and Texas annually produced a considerable amount of high-level talent. Prestige and tradition has always had a place in college football but it became easier to win at a place like LSU, once Nick Saban got everyone pulling in the right direction, than Nebraska, which dominated the sport under Tom Osborne in the 1990s but had a limited natural recruiting base.
Those recruiting advantages haven't gone away but this era has offered the cold-state schools up north an opportunity to minimize them with cold, hard cash.