alt Hacker NewsThe maximum libertarian alternative to patents isn't free-for-all copying, it's trade secret formulas - e.g. Coca Cola. Drug patents actually exist as a compromise given the clear need for the state to force companies to publish their drug formulas for research. Allowing companies to just keep their drugs secret would be even more capitalistic, and would increase drug prices even more.
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They keep their processes secret instead under the current system, achieving a "trade-secret" like result for some drugs. For some drugs it achieves the same thing because finding a practical economic synthesis is the hard part rather than coming upon a small bit of chemical that is proven to be effective. For others it wouldn't matter whether you kept it secret or not, someone would isolate and characterize it and reverse engineer a practical synthesis.
The biggest value protector arguably of the patent-FDA approval process is on the FDA side, who create massive barriers to entry that mitigate close unpatented chemical competitors from outside the pharma oligopoly from competing.
This is where prizes come in. If you create a drug and keep it secret, the government can grant you a large prize as an offer to reveal your secret.
This is a much better compromise. The company will end up with more money(and faster!) as a result of this prize than under a patent system - since the patent system induces dead-weight losses, and the government will end up with more lives saved.