Why not?
Just because free markets haven't existed for decades, doesn't mean they don't work.
I didn't say that free markets don't work. I said that Constitutions don't work.
Can you show me a Constitutional Republic which has successfully prevented its Constitution from become a dead letter for at least 100 years? Just one? Even if you can, that would be an abysmal success rate.
"If an agency is the ultimate judge in every case of conflict, then it is also judge in all conflicts involving itself. Consequently, instead of merely preventing and resolving conflict, a monopolist of ultimate decision making will also cause and provoke conflict in order to settle it to his own advantage. That is, if one can only appeal to the state for justice, justice will be perverted in the favor of the state, constitutions and supreme courts notwithstanding." ~ Hans-Hermann Hoppe