In several countries, everyman's "right to roam" is codified or understood. The basic essence being, you might own a title to the land establishing a right to use it for homesteading or commercial use, but you can't ever just bar someone from being on it.
I've got my mountain bike kitted with saddlebags. My hammock (along with bug net and rain fly) stuffs nicely in one. In a very real sense, I could live substantially with things I could stuff in there. With the right to roam, I could sashay across the country, spending the night swinging from whatever supports me, and gathering coin from odd jobs. While I'd technically owe income tax off whatever I collected, it might be difficult to file 100 1099s in support of $5,000 income over a year.
I've considered it more than once. Of course, here in America, I'd immediately run into a giddy "If someone's trespassin' on mah proppity, I can legally shoot 'em!" sovereign citizen.