Here is data from the IMF, for example, showing US and EU area GDP as a percentage of global output over time, gradually declining since 1980. The decline from 1960 to 1980 in the US was even more dramatic: in 1960 the United States GDP was about 40% of global GDP.
US GDP growth is slow, China's is high and BRICS is coalescing.
In not too long, China's GDP will eclipse ours and their cooperative foreign policy as opposed to our full spectrum dominance policy will yield major benefits. Dedollarization is proceeding apace, and it accelerates with each sanction and aggressive and arbitrary move by the US. Other countries used to have no choice, but now choices are opening up. The end of dollar dominance ends the most powerful tool of U.S. hegemony and turns us into a mere great power, not the lord of the world.
Trump's policy is about corruption yes, but also likely about wringing more efficiency out of American industry by reducing worker protections and reducing middle management positions. They are trying different methods to juice growth. I don't think it will work for very long.
