I came across this news on CNBC where standard chartered bank claims that bitcoin will reach 5000$. Being a bank, this can be their wish and not a reality. Banks do not want bitcoin to become popular and therefore they spread this negative information so people panic sell and do not adopt bitcoin. 
Obviously, banks will never like Bitcoin to become popular which is quite natural & understandable, as it is a decentralized and not in their control. additionally, if it is massively adopted as method of payment, it can potentially reduce or may eliminate their role in the financial system.
There is another reason, why banks are hesitant to involve in Bitcoin, is lack of regulations in many countries for investing & trading in crypto, which restricts their ability to deal in crypto currencies.
I think they'll find a way to make a profit out of it, they'll "see the light" eventually, just as big energy (oil) companies embraced the fact that the EVs are here to stay and they started to buy out smaller EV charging operators and integrating them into the part of their business model. If it makes them $$$, they'll eventually do that shift.