For any history buff's out there I would be very interested in any instances the economics of a nation were as disparate as they are now and were able to stabilize to "normal" levels of inequality. The majority of instances that I was able to recall or search for were only instances when a revolution occurred in order to "stabilize" the inequalities rather than instances of rich individuals recognizing a problem and soap-boxing vague methods of rescue.

Well, unfortunately feudalism lasted for quite some time...