A lot of people dont seem to realize, a road is living infrastructure. It needs to be maintained in order to stay usable. You dont build a road and it just stays there forever. Its a service, not a one time purchase. Modern societies rely on this service to keep them running. Its not freedom to go anywhere without big government dictating where you can go. Its a specific, constantly updating and repairing living network - all controlled by the government.

Train tracks are the same, they just fill a more specific role. And AFAIK, here at least, if you buy a train, you can ride the rails too. A transportation engineer told me once, if more people bought trains, the government would be forced to lay down more track. Its a funny thought but in that sense, roads and train tracks both ultimately serve the people.