If you believe that health care is a public good to be guaranteed by the state, then a single-payer system is the next best alternative. Unfortunately, it is fiscally unsustainable without rationing.

The statement frames the health-care debate as a question of first principles: whether health care should be treated as a state-guaranteed public good. From that premise, it concedes that a single-payer model is a logically consistent policy choice—“the next best alternative”—because it centralizes financing and promises universal coverage. The second sentence delivers the critique: that universal, state-guaranteed coverage cannot be financed indefinitely at politically acceptable tax levels unless access is limited through some form of rationing (explicit or implicit). The quote thus combines a conditional concession with a warning about trade-offs, emphasizing scarcity and cost control as the decisive constraints on expansive entitlement design.