Murray N. Rothbard, “Robert Nozick and the Immaculate Conception of the State” (1977)

Published in the Journal of Libertarian Studies, Rothbard’s article challenges Robert Nozick’s derivation of the minimal state in Anarchy, State, and Utopia. Its central contention is that the transition from competing protection agencies to territorial monopoly cannot establish state authority without violating individual rights. Rothbard combines an anarcho-capitalist account of law with subjective-value economics to dispute both the necessity of monopoly and the legitimacy of prohibition accompanied by compensation.

The opening distinguishes a hypothetical innocent origin from the justification of actual states. Rothbard maintains that historical states arose through conquest and exploitation, not voluntary market processes.

To go further, we can say that, at best, Nozick's model can only justify a State which indeed did develop by his invisible hand method.

A possible rights-respecting origin therefore does not vindicate existing institutions. Rothbard also denies that consent could establish irrevocable political subjection. Drawing on Williamson Evers’s title-transfer theory, he distinguishes transferable property from inalienable self-ownership: neither a promise of obedience nor an ancestor’s agreement can permanently alienate individual rights.

The next stage asks whether competition among protection agencies necessarily produces a dominant provider.

Nozick then proceeds to discuss disputes between clients of different protection agencies.

Rothbard argues that such disputes need not culminate in warfare or consolidation. Fighting imposes costs, while negotiated arbitration can coordinate enforcement without establishing a supreme judiciary. Historical overlapping jurisdictions and commercial arbitration illustrate the difference between shared legal arrangements and institutional monopoly. Common standards need not require a single territorial organization to administer them.

This alternative nevertheless imposes substantive limits on enforcement. Rothbard does not regard private agencies as legitimate regardless of their conduct.

Any agencies that transgressed the basic libertarian code would be open outlaws and aggressors, and Nozick himself concedes that, lacking legitimacy, such outlaw agencies would probably not do very well in an anarchist society (17).

The governing distinction is between protection and aggression, not merely public and private provision. Even if an agency became dominant, market success would confer no right to prohibit competitors. Independents might settle disputes unrelated to its clients; suppressing them would invade their rights. Enforcing exclusivity would also be a deliberate coercive act, not simply an unintended consequence of voluntary exchanges.

Rothbard’s criticism of preventive coercion extends this objection. Fear of unreliable enforcement supplies no stable boundary between a minimal state and extensive authoritarian control. If risk alone licenses prohibition, peaceful activities become suppressible. Invoking Evers’s account of the proper assumption of risk, Rothbard argues that people should address uncertainty through voluntary arrangements, including insurance, rather than coercively transfer its burdens to others. He also questions whether risks and fears admit the objective measurement Nozick’s framework requires.

Compensation does not resolve these difficulties. Rothbard distinguishes restitution for an offense from advance authorization to commit it. Subjective valuation presents a further obstacle: an outside authority cannot establish how much would restore another person’s welfare. Compulsory protection is especially doubtful compensation for someone who rejects the dominant agency. Questions about eligibility, service levels, and rising charges expose further problems in the proposed passage from an ultraminimal monopoly to a minimal state.

The discussion of blackmail challenges Nozick’s distinction between productive and nonproductive exchanges. Rothbard rejects evaluating an exchange against a hypothetical world in which one party does not exist. The relevant comparison is whether the parties prefer exchanging to not exchanging. Examples involving buildings, auctions, and romantic competition show how broadly Nozick’s criterion could restrict voluntary conduct.

Finally, Rothbard denies that particular adjudicative procedures constitute independent natural rights. Drawing on Roy Childs, he reverses Nozick’s developmental narrative: competitors offering equally safe procedures could erode a minimal state through market entry. The article thus advances an internal libertarian critique of state legitimacy. Consistent protection of person and property, Rothbard concludes, supports competitive legal institutions; neither hypothetical origins, preventive prohibition, nor compulsory compensation establishes a right to coercive monopoly.