Propertarianism, or proprietarianism, is a right-libertarian ethical philosophy that advocates Lockean sticky property norms, where an owner keeps his property (more or less) until he consents to gift or sell it. It is also often accompanied with the idea that state monopoly law should be replaced by market-generated law centered on contractual relationships. Propertarian ideals are most commonly cited to advocate for a minarchist or stateless society with governance systems limited to enforcing contracts and private property. Propertarianism is synonymous with Capitalism.
The term appears to have been coined by Edward Cain in 1963:
Since [libertarians' in the United States] use of the word "liberty" refers almost exclusively to property, it would be helpful if we had some other word, such as "propertarian," to describe them. [...] Novelist Ayn Rand is not a conservative at all but claims to be very relevant. She is a radical capitalist, and is the closest to what I mean by a propertarian.
Marcus Cunliffe defined propertarianism in his 1973 lectures as "characteristic values of American history" in regard to property. David Boaz writes that the "propertarian approach to privacy", both morally and legally, has ensured Americans' privacy rights.
Markus Verhaegh states that Rothbardian anarcho-capitalism advocates the neo-Lockean idea that property only legitimately originates from labor and may then only legitimately change hands by trade or gift. Brian Doherty describes Murray Rothbard's form of libertarianism as propertarian because he "reduced all human rights to rights of property, beginning with the natural right of self-ownership".
L. Neil Smith describes propertarianism as a positive libertarian philosophy in his alternate history novels The Probability Broach (1980) and The American Zone (2002).
Hans Morgenthau used propertarianism to characterize the connection between property and suffrage.
Since 2013, Curt Doolittle has used propertarianism in an expanded sense to include all socially demonstrated interests instead of scarce resources. He considers it a subset of natural law defining rules of reciprocity.
(Source: https://en.wikipedia.org/wiki/Propertarianism. Oct 22nd, 2019)