Japan has grown so much that it's never reached its market highs from the 80s and hasnt grown since. Now that's a strong country I'd say. They are doing great.
Maybe 40 years ago they were stronger.
Certainly in the 1980's-1990's Japan was stronger.
Now their population is dwindling as well and they're growth is more like "sideways trading".
South Korea has gained more strength. They were a lot lower 30 years ago.
I remember people laughing at China back in the 1990's at the sight of thousands of bicycle riders in Beijing at other things. Now it's a different story.
Tremendous natural resources are needed in order to propel China and India higher, but this in the age of Corona, global economic crisis, "mad ecologists", "carbon footprint", "low emission", minimalism (trendy nowadays) etc. ... it'll be a lot harder.
The western colonial powers not only collected resources for "free" from their colonies, but they also destroyed their "frenemies" like Germany and kept Russia "at a safe distance", so that they can have their "safe space" to grow. All of that is now over.
The competition for resources is tighter, the planet is more crowded and there will be far more frictions in the future. See: Turkey vs. Greece/Cyprus/France in the Eastern Mediterranean.
Regardless, the collapse of the western colonial powers is happening. While everyone is predicting the demise of the US as a global hegemonic empire, one could notice the weakening position of the UK as well.
France: remains to be seen, but perhaps they were more influential in the 1980's.
Germany could gain more strength, but where I see a powerful momentum for growth is Turkey. Of course, wanting and trying is one thing, but achieving it is a lot harder.
Turkey too is being boycotted all around. Similarly to China.