I agree that it is very important the B10 gets into high growth states like NC and FL when the ACC falls. The B12 is not stupid. For the same reason they want to lock up high growth Utah and Arizona. There is a strong possibility the B10 is locked out of all the high growth area in the U.S.
Yes, how will the Big Ten survive having merely the three largest metro areas in the country in their footprint and 5 of the top 7 metro areas.
Growing areas are nice to have, but having a massively larger baseline population is more important.