we could get three more BYUs and fill them all, but that would be an astronomical cost to buy/build up those schools to make them even as good as BYU-I. I suppose they could buy out Southern Virginia Univ. sometime and have the infrastructure already in place, but the town can't support any bigger of a university and SVU is pretty small right now.
I love BYU, my daughter starts there this coming fall, and my younger kids are thinking about it already, but the Church has to draw the line somewhere and I think it's best that we don't keep expanding.