The US just created a massively polarized and unequal society so that when a country creates a new brilliant researcher or innovation, an American company can buy them out.
Basically, the insane poverty and lack of government services that the average American experiences gives them enough cash to buy up innovative people, companies, and competitors.
Economics Explained has an interesting video on the topic. After WWII, Japan became the first country in Asia to undergo an industrial revolution and soon became the second largest economy after the US and was by many accounts set to match or even overtake the US. They then suffered an economic collapse due to unchecked growth and speculative markets and decided to never again speculate on the future and just stick to tried and true methods.
Since the 1990s, Japan's economy has barely changed while other nations have seen huge growth. You'd assume that would mean Japan is now far behind, but they aren't. They seem to have mastered keeping everything the same for decades without the normal decline that comes with it.
The idea that Japan was ever more technologically advanced than the US is a tough argument to make. Perhaps they had better consumer and transportation technologies, but the US led the world in nearly all other forms of technology (see silicon valley, NASA, US defense technology, etc). It's cool the hate on the US but there's a reason it was the world super power for decades. It's too bad it's turning into an anti-science christo-facist kelptocracy.
Same thing that happens everywhere. Low cost innovation gets expensive as companies grow and salaries rise, profit seekers move to exploit cheaper labor elsewhere.
dude had already swallowed the tech bs, thinks ai is the furthest advancement of technology when it can't compete with ancient tech. literally can't do what a calculator can do reliably. or a timer. or a calendar.
I don't exactly keep up with the technological innovations of every country, but I get the feeling it isn't so much that Japan hasn't innovated in decades, so much as they haven't done anything he (it's 4chan, let's be frank, it's a he) personally finds interesting or that is publicized in the medium he gets his news from.
japan and germans selling goods to america with no tax etc, they had no serious miltary concerns, invesment, america protects them, there is a invest sell cycle to them so they can produce more tech and goods until 80s and 90s america stops buying because it hurts their economy and japan and german passed them now they both in crisis. no major market to sell no spare money to inovation no more protection.