Robert Kiyosaki speaking during a podcast interview. Source: TechGaged / YouTube Popular entrepreneur and finance educator Robert Kiyosaki has renewed his criticism of holding cash, arguing that inflation and government money creation continue to erode the purchasing power of the U.S. dollar. Using the scale of a $1 trillion figure, the Rich Dad Poor Dad author claimed savers are falling behind as hard assets continue to offer better long-term protection. He again encouraged investors to own Bitcoin (BTC), Ethereum (ETH), gold, and silver instead of cash.