Like pre-revolution France and Russia, the United States now sustains a class of rich people who are inconceivably wealthy. Their wealth no longer makes sense in a human context—they have amassed more money than they and their entire extended families for centuries ahead could ever spend. This becomes wealth for the sake of wealth — or wealth for the sake of power. That power is working, evident in the tax breaks Trump just granted billionaires, especially for inheritance. When a country has people that wealthy living alongside people who are mortally poor, it has never ended well.
History has some lessons about all this. When a country is run by a tiny minority of rich and powerful people who demonstrate little care for the rest of the population, they are overthrown. Look at pre-revolution France and Russia. Both were run by a small, fantastically wealthy aristocracy who were totally cut off from the rest of society. Both fell to violent revolutions. The oppressed masses always rise up in the end.