Pardon the snark, but I think that you and that misnamed philosophus dude missed the boat on this one - perhaps you didn't read the entire piece?

The punch-line is that non-participation in shared (public) resources by the wealthy is a more significant problem then disparity. An interesting premise having both plausibility and examples. Somewhere back in HN, within the last year is an interesting study of the exact question focusing (I think) on education systems. But healthcare systems also work.