Conducting of voter participation events like primaries and caucuses is a tool to fool the public into thinking it has more power over choosing its leaders, than it really has.
One of the pillars of our current system, "universal suffrage," is shown, historically, to be a death sentence for any country. Give the public the privilege of voting (it isn't a right), and it will eventually vote money for itself out of the public treasury. We're there.
The impotence of primaries is a self fulfilling prophecy.