It's a self fulfilling prophecy with only 4 spots in the CFP, and the committee using "the eye test" which is subjective, and of course, we all know who has the best eye tests based on recruiting...in fact, the committee told what it is ahead of time by the recruiting services.
Thus teams like Alabama and Clemson and OSU and Oklahoma have work hard to be removed from a spot (look at how badly Ok screwed up this year, and they still came within a hair of getting a spot with two losses.
The top recruits want to play on a playoff team, thus they are stacking up on the runway to sign with these same teams.
The key is to open up to 8 or 12 playoff spots. Then the recruits will spread themselves out for better parity.