According to ICODrops - G20 closing statement on cryptocurrencies: we acknowledge it - but it needs regulations. We will keep monitoring it.

This should be seen as a good news for Bitcoin and crypto space; we knew regulation is coming, it's great they didn't decide to take a strong position against the technology.
Source:
https://www.ethnews.com/g20s-closing-statements-on-cryptocurrency-and-blockchainThe best part is that, strong economies are now starting to acknowledge the cryptocurrency. 2 years back, majority of the governments were too ignorant about it. Now it is not only acknowledged but also being discussed in a serious events like G20. So that's good news for the entire crypto market in general.
We all know that regulation is inevitable. But I am also sure that majority of the governments won't ban it. Because it is literally impossible for the government to actually ban it. Governments can certainly ban it by issuing a law but they can't ban it in practice. So they will not take this route. So when they say that they are monitoring it, it means they are digging deeper to gather more information before actually taking any decision. I am sure 2018 is going to be the year of cryptocurrency adoption.