It's a thing in other countries. Scotland has the 'right to roam' which basically allows anyone responsible access to private land by most non-motorised means. It obviously doesn't extend to people's houses and gardens, and there's also exclusions for fields with crops (but not livestock) and hunting/fishing. But you can hike, bike, horse-ride, canoe, or camp on someone else's land so long as you aren't causing any mess or trouble.