You do realize that a) corporate welfare is egregiously prevelant in the United States and b) the “government” isn’t a single entity, right? If a democratically elected (roughly) assembly, e.g. people with a ballot measure, a city council, a state legislature, etc. decide that municipal internet is better for society and provided as a government service, that is absolutely that body’s right. Government doesn’t exist to outcompete the private sector. Government is not just another Amazon or Google or Walmart (ideally; in practice it kind of is). It’s there to provide stability, basic services, justice, and an overall formal structure so civilized society can exist. If fiber is one of those services, and that’s the will of the people, then so be it.