Trust and government
A government system can only act efficiently and bring about great change if it enjoys the confidence of the population.
Great changes in China. Since decades in most cities, gasoline scooters are no longer eligible. Then the rapid expansion of high-speed rail lines. A few years ago the rapid change to a cashless society. The conversion of the auto industry to the electric car industry. The energy transition.
All this is possible because the government, the government system has the full confidence of the population. For example, AliPay and WeChat practically have a monopoly on cashless payments. No problem for a Chinese who trusts the people's dictatorship: "If such a monopolist makes nonsense, such as introducing high transfer fees, then the government will be on our side and knock him hard on the fingers." The state is there for us, the state is on our side.
For many decades, the standard of living in China has been rising steadily. Thus, the population's confidence in government and government system has grown steadily.
Since 1980, the standard of living of the poorer sections of the population in the USA has been falling. Systematically, the US population was split into 2 political camps. The one side commented on the government work of the other side basically only with polemics and hate. A climate of greatest distrust against the government. In the greed for power, the two major US parties have made the country virtually ungovernable.
Nothing of what the Chinese government has achieved in the past two decades is possible for the US government. Expansion of high-speed railways? That would lead to an immediate protest storm against wasting tax revenues and violating the free market economy. Quotas for electric cars? California failed with the CCAA - California Clean Air Act. To celebrate the victory over the CCAA, GM then took away all EV1 electric cars from all lessees and scrapped them.
If there is a cartel or monopoly in the US where it exploits financially and harms citizens, then the US citizen is sure the government will be on the side of the cartel. This creates a society of mistrust and conspiracy theories.
Too many illogical conflicting conspiracy theories, too much stress with mistrust against the government, all the ideas of what the government might do to the people soon, then leads to the final stage of conspiracy theorists: the flat Earther.