Shouldn't be a surprise, as private property (and keeping the government/all other parties out of it) is one of the fundamental tenets of the U.S. Constitution. And so a lot of people come with that mindset.

It's a double-edged sword, and while I agree with a lot of the points in the article (it's one of the primary reasons why Europe is unbelievably pleasant to visit), the US will never implement anything remotely close to free-to-roam (or whatever it's called in the UK, as an analog) policies. Too many private interests against it.