that's easy to say when you're one of the favored programs.
when you're not, people appease their little man syndrome with conference affiliation.
out of the slightly >100 D1 programs, about 10 have a chance of ever attending that national title game. virtually all of the TV time is divided between the big 10, SEC, Big 12, and Pac 10 teams, and only the top few teams out of those. to take our example, florida had about a half dozen nationally televised games this year, despite their poor season. miss state was much more deserving, yet only got two. and if miss state would've beaten LSU and threatened the preferred winners by going into tuscaloosa with only one loss, the fixing ref crew from slive's office would've descended on them in full force, like they did to us against auburn this year, and against florida last year.
the only way to avoid full blown mutiny from those programs who win games they're not supposed to win is to sell their fans and boosters conference affiliation.
and to be COMPLETELY honest, the reason why 10-15 more aren't allowed to compete is primarily the big 10 brass.
no conference's administrators are more resistant to a playoff than the big 10's are. the big 10's fascination with preserving the rose bowl is the strongest force against a playoff at this point in time, even in the face of demands from the TV networks so much of their money comes from.
and the reason for that is the same little man syndrome that we have in the SEC. as long as it's all about the rose bowl, the second tier big 10 teams can make their season all about beating OSU and making the rose bowl. if they win their one all-or-nothing game they can claim victory without having to tell their fans that there is no way in hell they're ever making it to the national title game.