Earlier quoted context omitted.
For that matter, the "government" is an abstract concept. So what? The point is, the "government" doesn't own anything. They regulate it. That is completely different than ownership, and in the case of radio spectrum the very concept of ownership is really hard to even reason about it.
What is ownership of a piece of land, precisely, then, and how does it differ from ownership of the radio spectrum? My understanding is that ownership of a piece of land simply means that you'll (or a proxy, whether private entity or Government, will) use violence (or threaten it) to keep other people from using it without your permission.
2) Even given the social construct of ownership, the enforcer of the social construct is not the "owner". If I pay a private security firm to guard my property, most people don't assume I've ceded ownership to them.
3) Even given those narrow definitions, the radio spectrum is much more nuanced than physical property. Radio waves literally travel around the world. I as a property owner can enact physical boundaries that have a fair chance of preventing trespass and providing an uninformed arbitrator to make a decent decision. When it comes to radio frequency, even the act of trespass is a highly technical and subjective topic.