Every program that was dominant in 2014, was already dominant in 2010, except for Clemson.
But only three since then, and if you take out Florida State, there are only six up until that time, point being out of the 130 or so colleges playing Division I football there are only a half dozen or so that realistically can win the championship.
Think of it like Nascar, their may be forty cars staring the event, but only five or six that stand a chance of winning, again, as in college football, it comes down to money and what you are willing to do with the money