But no clear evidence on the direction of causation exists, unfortunately. (I'm not a fan of econometrics, but this is one of the few cases where it could really go both ways)
A standard pareto distribution would be more on the line of 80-20, but yes, that's the gist of it.It's misguided philanthropy, particularly for the political classes. Every country, regardless of politics enjoys a universal 90/10% wealth split.