Before the coming of many institutional funds to cryptocurrency, many banks were then resisting the possibility of their business and function being taken over by something that is new and essentially unregulated - the possibility of the people to be their own bank is an idea that is sacrilegious to many of the leading banks. However, with the acceptance of many cryptocurrencies banks are realizing that they should and can be a part of the industry and make good amount of money. And sharks always go where the blood is. There is money here and so we are now witnessing many big banks coming in. Nothing surprising at all.