There's a major difference between wireless and wired communications: one of them requires a wire. You have to pay a lot to get those wires to the places where

There's a major difference between wireless and wired communications: one of them requires a wire. You have to pay a lot to get those wires to the places where you want them to go, but they don't interfere with each other. You can double capacity along a link by doubling the number of wires. (Or fibers, or continuous waveguide metamaterials, or whatever.) When you need to double capacity along a wireless link, you need to either come up with a 2x better coding regime -- and those don't happen all that conveniently -- or you need to have access to twice the frequency range that you had before. Since the FCC hasn't given up on that part of their regulation, it's going to cost you quite a bit to have that license. Now, the next time you need to double, you have the same choice... Absent a major regulatory change not likely before 2020, I expect a fire-sale or give-away of licensed frequencies, all going to major incumbent players.