I disagree.
The B1G is NOW about full programming & international Brand. And that is primarily Football today. But, it's also about Entertainment dollars. And, it's also about promoting a bunch of LandGrant State U's internationally. And Research to bring in the big dollars. And rising above the Platform of lots of other "Publics". The B1G Network means a lot in the Constant Branding as this moves forward on a International scaling.
And, that does include their reach into Hockey. And Hoop. Guess what ... UConn WBB play into that as well. If you can spread programming & you can advance to farther reaches of New England to make the Shanghai top 100 along with the USN&WR top ranks, the B1G needs to be FAR beyond Football.
Maybe the others (ACC and B12 - for instance) are in the game of expanding their revenue model. The B1G is reaching for far more.