without football, it's highly unlikely we ever get invited to a "BCS" league, primarily because the whole BCS structure is organized around sharing the BCS football TV money pot... but things on the big picture level can change over time ...for example they could start real d1 playoffs and the TV money cartel might lose power to the NCAA (as is the case in basketball) ...there would still obviously be advantages to being in the more powerful conferences, but it wouldn't necessarily be as locked in by the BCS near-monopoly ...popularity, and the money it brings, and who then controls the money, will play the biggest role in the shape of things to come
stuff changes and evolves over time... consider that both basketball and football as we know them are only in the one hundred year old or so range, and even within that time have changed quite a bit ...sometimes we talk as if the way things are is the way things have always been or will always be