This is true, but the B12 came knocking once it had stabilized with West Virginia and TCU. Louisville still said no.
And I also agree with the SEC, Pac12 and B1G being the stable conferences. There is just as much chance of the ACC going away as there is the B12 going away.
The ACC may be more stable than the Big East, but so is the B12.
The Big12 was looking for markets at the time. TCU was a football decision, but not a new market. WV really doesn't bring a big market with them, but Louisville would have. Louisville declining seemed more of a "we're going to get a better offer from someone else" than anything IMO. In the money sport (football), Louisville made a business decision. The Big12 is definitely a better football conference for them, but I don't know how much revenue it would bring them. Getting into the Big10 or SEC would have been their ideal situation. The ACC has stable football programs and therefore will more than likely continue to exist. Texas was the main reason so many detracted from the Big12.