Japan may have better human rights now, but was not the role model in the WW2.
People are an important component of growth. Japan is facing aging population negatively impacting their GDP.
What is greed for you? Building companies in the hope of becoming millionaire? If yes, then all the big economies have followed this path. Even China and Japan were greedy in that sense.
You can have growth without greed. This might sound crazy these days but you can build things and do things that make money and actually benefit people rather than exploit.
Japan is a capitalist country, their growth is as much based on greed as any other.
They do have robust social safety nets and a culture of civic mindnedness which improves quality of life over many other capitalist countries (particularly the US) but also "black companies" and salarymen working themselves to death.
