Arian Campo-Flores of the Wall Street Journal reported that the net worth of the top 0.1% of households in the U.S. reached $23.3 trillion this year, while the bottom 50% hold $4.2 trillion. Campo-Flores outlined a world in which the “ultrarich” are living in luxury and increasingly sealed off from everyday people. “They don’t wait in lines. They don’t jostle with airport crowds or idle unnecessarily in traffic,” Campo-Flores writes. “Instead, an ecosystem of exclusive restaurants, clubs, resorts and other service providers delivers them customized and exquisite experiences as fa