Also the article explains that the main wealth of the 9.9% is that they live in the best neighborhood, with the best schools and the best neighbora. They use t

Also the article explains that the main wealth of the 9.9% is that they live in the best neighborhood, with the best schools and the best neighbora. They use their zip code to recognize themselves. So it make sens that they place a big chunck of their wealth into their house because your house is your social status.