A bank in my country (Spain) called BBVA bought 5,000 Bitcoins in 2013 "without making much noise" at a price of $266 each. That bank did well to buy and begin to understand what Bitcoin and blockchain is and how it works. Not only have they made many millions saving those Bitcoins all these years, but they have understood how it works without problem. What I just said is the good side of the coin, as there are several more banks (Banco Santander) that are now in trouble for being associated with Ripple Labs, Inc.
What I mean is that banks need new technologies in order not to be left behind, but they also try to put barriers to it, since the transparency that blockchain offers is a threat to banks and governments.