If this is truly about money, what’s stopping the Big 10 from saying “sorry Rutgers and Maryland, it’s not working out and Oregon/Washington make us more money.” Instead of constantly expanding the pie, it would actually make more sense to trim the fat at some point than to say “Oregon doesn’t raise our average we don’t want them.”
Fwiw, ISU and KU probably make more sense ratings wise and geographically than a couple Big 10 schools but none of that matters as much anymore and it’s not happening for us.