It’s been 3+ decades yet why can’t Japan overcome it’s economic stagnation? Eastern Europe has similar Per Capita to Japan with more declining population yet it continues to grow?

In 1995, it was far ahead already so make sense it can't overcome a lost decade but nowadays, it isn't even that rich relative to rest of the world

Nominal Per Capita wise, it's 36th in the world around same as Czechia or Portugal meanwhile PPP wise, it's 40th roughly same as Romania or Croatia.

With current rate, all of Balkan will be ahead of Japan in PPP Per Capita in a decade. Even decent chunk of South America will surpass it in a decade or two.

Why?