It is a good analysis, and there is truth to democracy’s inherent weakness. From its conception, it eventually does descend into a dominant-party system, 9 times out of 10, on the side of the left wing. They control colleges. They import immigrants. Eventually, they take control. ALL of Europe fell to the left shortly before the collapse of the USSR.
This eventually collapses itself, because welfare for all is unsustainable. It has a shorter shelf-life than flat-out communism. When this happens, you get situations where previously insignificant, extreme parties gain momentum and influence as they promise a solution.
It would seem that the only way to uphold sound spending, self-reliance, and basic moral values, is through an autocracy, but that itself contradicts the key right of representative government. See the problem?
Will America choose a Pinochet or a Chavez?