Meh... One can also say that unless people are morally righteous, it's impossible that they set up the institutions that make a sound economy possible.

There are many examples of formerly functional economies that enrich people, only for the newly rich people to become spoiled for things like "better redistribution" and "more public services", since they think "we can afford it".

That seed of moral weakness ends up poisoning the institutional system, which finally kills the economy, and so on.