I can see how a government run utility that provides a basic commodity that doesn't ever change could be well run. The technology is well understood and doesn't need to change much. It either works or it doesn't and when it doesn't everyone complains to their government reps.
is broadband like that? If we turn it over to the government will we be happy if it is exactly the same 40 years from now (well perhaps a little less down time)?
Cars are provided by several different companies. In the last 40 years there have been tremendous improvements in safety, efficiency, and comfort. Roads on the other hand are supply by the government. Any improvements there?
I'm old enough to remember the explosion of new services that suddenly became available when Bell was split up.
A private company in a competitive environment has to constantly improve to stay in the market. A monopoly doesn't. A nationalized industry doesn't. A government agency or industry may happen to get good leaders and do well, but if they don't there isn't much pressure to change.
Consider electricity. The uses for electricity have exploded over the last 30 years. The ways it is used, the types of devices, the electronics, the cars, etc. etc. But most places are supplied with electricity by a monopoly or some sort of government run group. Have you seen any modifications in the electricity industry to better supply the new uses of electricity? Any innovations or new ideas for how electricity is delivered to the home to make it more useful and convenient?
If an industry by it's nature is going to be a monopoly then it may make sense to nationalize it. But doing so carries a heavy price in stagnation that must be considered. For the moment most people do have choices. There are cable, fios, cell-tower and/or satellite available to many people. I suspect most people have at least two of those options in their area. A lot of local towns need to figure out how to get out of local monopolies they foolishly (or corruptly) granted, but there is no need to nationalize this stuff and end innovation.