Privacy tools are usually defended on technical grounds: better cryptography, stronger anonymity sets, harder to trace. That framing concedes too much. This talk draws on The Praxeology of Privacy to make the economic case. When surveillance is cheap, control is cheap. Confidential transactions and stealth addresses impose real costs on the adversary's ability to observe and act. Mises' action axiom tells us economic calculation requires informational freedom; Voskuil's axiom of resistance tells us security is measured by the cost to compromise it. Monero operationalizes both. The talk covers the three-axiom framework, the financial surveillance stack Monero is built to defeat, and why fungibility is the property that determines whether digital money can remain sound money.