The practice of enclosing hundreds or thousands of acres behind small private parcels does a disservice to the public.
A few years ago I headed up a canyon about 70 miles from here. On every other post on both sides of the road were signs that read "Spirit Woman Ranch. Keep out". I drove close to 5 miles between those fences before I got to the 'ranch'. It was a cement pad with a very expensive motor home sitting on it. Some rich guy had bought a ranch to make it his private playground and he closed off access to many thousands of acres of public land.