Buying a large exchange like Poloniex is an important step in Crypto world.
Circle is a company held by Goldman Sachs which is one of the largest banks in the world, and it's just the beginning.

I think we will see similar actions like this in 2018 as many banks will start buying Cryptocurrencies or generate their own tokens or buy crypto companies or even create their multi-function platforms.
Not only banks but also large companies as we saw Telegram created TON (Telegram open network) and LINE app will create a crypto exchange at the end of 2018 and IQ option forex broker created also OTN token (Open trading network).

That's why I see 2018 is crypto revolution year.

I'm so happy to see this news
Thank you @jrcornel for sharing this news and info with us :)