Blockchains will probably be used in various industries because of the benefits of this technology. However, this doesnt mean they will use Bitcoin or any other decentralized blockchains. They will most likely make their own centralized blockchains. I dont really think this will affect Bitcoin because Bitcoin still has the advantage of being decentralized.
I am not agree with that. I don't think either banks will accept any crypto currency or create their own blokchain. Reason is that banks are built on the philosophy of centralization and blockchains are against their main philosophy. So I don't think that can accept it.