When Chris Christie shut down New Jersey's state-funded public radio and TV network (NJN), WNYC in New York and WHYY in Philadelphia gobbled up the former NJN radio stations and turned them into simulcasts of these neighboring big city stations. We'll probably see more of that as rural/exurban stations cease local operations and turn into simulcasts of larger operations.
Yes and no. The big city stations will probably gobble up stations in mid-size markets if they believe there is enough of a population base there to provide the necessary financial support for these stations. St. Louis' public radio outlet, KWMU, did this many moons ago with the then-independent outlets in Quincy, IL, and Rolla, MO.
On the other hand, big city stations,even state public radio networks, may not be so interested in keeping stations in very remote areas with little of a population base for financial support. Nebraska Public Radio may wind up jettisoning its outlet in Merriman, because it only serves a sparsely native American population; the same could be said for South Dakota Public Radio which may wind up jettisoning its stations in Kado and the 97.1 frequency it owns in the northwestern part of the state for the same reason. And I wonder how long it will be before the Boise State university public radio network jettisons the stations they just put on the air in Challis, Stanley, and Salmon due to sparse populations living in the stations' service areas.