Blockchain technologies grew to a level that large financial institutions can no longer ignore them. They have plenty of money and blockchain technologies looks like the perfect opportunity to spend them. However, according to their traditional views they want to be able to control the specific technologies so in 2018 we might see more investments in creating new blockchains than in investing in the truly distributed existing ones.
In the past years, corporations such as BNY Mellon, Goldman Sachs, ING, Santander, and UBS worked on many proof of concept blockchain projects, so we will see a few of them moving beyond the proof-of-concept phase.