wouldn't you think that when the financial aspects of it really start to make sense, some of these ultra big name schools that lack MBA programs like Princeton, Cal Tech, Tufts, or Brown will consider doing something? These are all the type of school that could immediately become an Elite school virtually overnight.
Schools typically lose money on their full time MBA programs. They recoup those losses by offering executive ed or selling publications.
Moreover, although we may assume that just the name of the university will give a heavy boost to a new MBA program ,but it is always not the case. cases in point are Yale, Oxford, Cambridge. They have started MBA, trying to move up the ranking but it is simply not feasible to get accomodated in the tight top tier.
My prediction is that, if this competition persists and schools do the things right, then the top tier may get broaden ( from 10 schools lets say 15 schools) but climbing up the ranking is difficult.