alt Hacker NewsI don't have access to read the article, but I wonder if they are looking at the median or the average. Averages don't tell the complete story like distributions do. When you just measure averages, a room with 1 person who has $10M plus 9 people who have nothing has the same prosperity as a room with 10 millionaires.
Prior discussion, including debate about averages and including free link to read article: https://news.ycombinator.com/item?id=44616486