> it's an illiquid market for them at the volumes they are looking to trade This is the case with any market. Try liquidating a few million shares of any stock

> it's an illiquid market for them at the volumes they are looking to trade This is the case with any market. Try liquidating a few million shares of any stock. There are large volume desks already (associated with major financial institutions) who can handle very large transactions. They will take a bit of a margin on the transaction, but that is a function of market dynamics and has nothing do do with cryptocurrency vs fiat currency.