The regulators could have forced the big four carriers (now three) into a common carrier model.
In that setup, all cell providers would effectively be an MVNO, and the three (then, four) physical networks would be operated at arms length from the consumer facing side. Also, the four networks could be structured so that their financial incentives were to improve cell coverage and bandwidth instead of undermining each others' operations.
In that setup, all cell providers would effectively be an MVNO, and the three (then, four) physical networks would be operated at arms length from the consumer facing side. Also, the four networks could be structured so that their financial incentives were to improve cell coverage and bandwidth instead of undermining each others' operations.