I dunno, sounds to me a lot like the excuse that Socialism hasn't worked just because the right person hasn't been in charge yet, or Hitler's assertion that the Soviets were doing Socialism wrong. Socialism is simply unsustainable. You always run out of other people's money. Period.
Any system that relies on government as the car, the gas, the road, and the driver where citizens are just mere passengers on the State's Magical Mystery Bus will never be workable or sustainable.