The U.S. avoided this outcome for a long time, but it's in the process of happening to D.C. too. D.C.'s median household income was only slightly higher than the national average in 2006. But by 2015 it was almost 40% higher: https://www.washingtonian.com/wp-content/uploads/2016/09/DC-....
Not surprisingly the Michelin Guide started handing out stars for D.C. restaurants in 2017: https://en.wikipedia.org/wiki/List_of_Michelin_starred_resta..... For decades, it ranked (in the US) only restaurants in SF, NYC, and Chicago.