the profit motive informs a lot of this in the United States, and as capitalism enters its later stages one can be forgiven for expecting great works projects from the nation. the US is declining as a superpower and neither has the collective willpower nor vision to execute something like high speed rail. anti socialist propaganda prevents a lot of this as well but on the whole this is normal; nations rise and fall over time.

It bears remembering that Chinas communist party works in five year plans along thoughts (deng xiaopeng, xi jinping, mao zedong thought) to advance the primary state of socialism in the pursuit of communism. climate policy is actively factored into chinas GDP by the party. Since the 17th national congress china has clearly articulated plans for advanced manufacturing and green energy during plenary and study sessions that align with marxist leninist thinking. So while it may be tempting to attribute these massive green energy projects to chinese manufacturing power alone, its absolutely under the continued guidance of the communist partys mass line and central leadership committee and aligns with the governments objective of building a modern socialist society by the mid 21st century.