Libertarians claim far too much as "the product of their labor." Firstly, they immensely overvalue their individual contribution to a product and undervalue the contribution of all who came before them. Secondly, the finite natural resources and space (land) of the planet can NEVER be considered the product of anyone's labor, and thus can NEVER be treated as private property in any strict sense (exclusive ownership in perpetuity until sold, zero property or inheritance tax). The later point is conceded by Geolibertarians[2][3] and Georgists[4].
The notion of perpetual ownership of any finite resource is antithetical to the principles of the free-market, because it allows one to purchase an infinite amount of something (i.e. perpetual rights to a piece of land, including perpetual rent collection) for a finite sum.
-
[1] https://en.wikipedia.org/wiki/Rent-seeking
[2] http://geolib.com/welcome.html
[3] Are you a Real Libertarian, or a ROYAL Libertarian?, https://news.ycombinator.com/item?id=7076632
[4] http://povertythinkagain.com/controversies/a-word-from-the-s...