Exactly this! What the heck would you do with $150 million in cash... stick it in a $250,000 FDIC insured bank? Most people with this level of wealth diversify

Exactly this! What the heck would you do with $150 million in cash... stick it in a $250,000 FDIC insured bank? Most people with this level of wealth diversify their holdings, which makes the total amount less liquid, but much more secure, as well as providing protection from inflation or returns on investments. Real wealth often does not have perfect liquidity, and I would argue in these amounts, almost never does. Selling 100s of thousands of dollars worth of bitcoins a year for USD would hardly put a dent in the markets, and is probably the most anyone would want to do. The purchase of an asset would instead be made directly with bitcoins in a transaction such as this.