I don't think that the banks will be enemies forever with the crypto world. It is only a matter of time for all the big banks to join the crypto community themselves. The banking business is dependent on what the clients want, and if the clients want to buy crypto currencies than the banks have to adapt. There is no point in fighting between the two industries, in today's world we need both of them. The world can't function without banks and also not anymore without cryptos. The two industries will have to work together to attract more clients. I remember reading a lot about the big American banks all adding crypto trading desk during the last big bull run. Once crypto prices are going to recover again and there will be another big price jumps the demand for cryptos is also going to pick up again. In the end it's the customers choice what they are going to buy with their money.