> About the only thing I hear that you can buy with Bitcoin is USD, and even the liquidity of that seems questionable beyond a certain amount — the millions may

> About the only thing I hear that you can buy with Bitcoin is USD, and even the liquidity of that seems questionable beyond a certain amount — the millions maybe but probably not billions. The order books of Bitcoin exchanges are publicly available. Last time I checked, Bitfinex had around $100MM in liquidity at 0.1% slippage.