Well for an investment banking company it is not too late for them to enter into the scene as they will most likely be part of the side which controls the price movement of Bitcoin, but I don't know why he thinks that Bitcoin will ever have a price movement that is below 20%? I mean he knows that Bitcoin is a decentralized currency the only way it gets stable is if no one is willing to trade it anymore. For me the price movement of Bitcoin makes it more suitable to "trading" as although making it more risky it is also profitable.