In my opinion in 2020 Bitcoin will be more stable and with the highest price and a bigger community of users and supporters worldwide. 
That's true, bitcoin would surely achieve that milestone by 2020 and the price would be on the peak by the year 2020 so the people who are getting into bitcoins or investing at a moment would be enjoying good profits by 2020.
I am not sure this milestone will be achieved. Let's face it. Bitcoin is getting older day by day. And it's still controlled by a group of whales. Which is very very very bad.