You realize, BYU football will never have less fans willing to pay for a football game than USU or other bottom feeder schools right? I don't believe we'll ever have less money than a USU type team.
And those football programs have been around for decades. Even if interest faded it wouldn't ever fade to the point where the football team couldn't support itself. Football team supports every other BYU sport outside of mens Bball and generates a surplus even in a dismal year like we just had despite tons of empty seats etc. The other sports would be gone way before Football was. BYU football isn't going anywhere and if it did it would be the last sport to go at BYU.