Sustaining, in my mind, means holding par.
If we continue on our curve and the rest of P5 continue on their growth curve, we will not be able to maintain what we have (or have had) and continue to fall further and further away from P5 conferences and programs.
You can think about this in terms of $$$ and product on the field. We have seen a fall off and will continue to see a fall of. As much as we lament Rutgers, Vanderbilt, and Kansas these schools are still getting roughly $30M annually in just TV money. This new deal with ESPN may bring us up around $10M+
How do you compete with that?