The reason sane property owners maintain those roads is for firefighters.

Every state I’ve lived in has landowner indemnification for trails. In Colorado, the landowner must put up signs for hazards, though a local group always exists to help with this. In my experience, the rationale for such a trail to be closed always comes down to a single person ruining it for everyone else.

The second you charge money (for hunting, usually), all that protection goes away.