When the SEC went to 14 teams, the other BCS conferences watched to see if it would work. It did work, and now the Big Ten is expanding. They're reportedly going to add Maryland, as well as Rutgers, taking them from the ACC and Big East, respectively.
Both teams would add an East Coast presence for the Midwestern conference. And Rutgers would help the Big Ten infiltrate the New York media market. The Big Ten already has a juicy TV contract with ESPN, as well as their own network, so adding teams in general only increases the content they can provide.
I'm getting a little tired of this musical chairs in college sports. I want it over with.
In 10 years or so, it will all be sorted out. There will be three major conferences, with 16 or 18 teams each: The Big Ten, the Pac-16, and the SEC. The ACC and Big East will combine as a 12 team league just below the Big Three.
And in Webster's Dictionary, the Big Ten will pay for the meaning of the word "ten" to be changed to "any number between nine and twenty." "Ten" will become an approximating word like "several."