Ah, but maybe he's not overlooking, for one example, the broadband monopoly or (essentially non-competitive) duopoly that exists in contemporary American society.
Compare what we've got with countries where the government owns the physical medium and leases it to a variety of bit-carriers--it's tough to argue against that kind of observable evidence.
There are plenty of cases where government stewardship of the playing field--with private companies competing on that playing field--works out for the great benefit of the citizenry.