She truly doesnt understand economics. Does she really think people like Bill Gates, Jeff Bezos , Elon Musk would have the motivation to grow their businesses if the government set an artificial cap of what their NET WORTH could be.
I don't know what she thinks, but I think they would. Many business people aren't in it for the money.
I think the solution though is very high tax rates for the super rich (to include sale of stock) with almost all loopholes closed (charitable deductions allowed), rather than an actual cap.