Why you are so confident with that prediction? I see no proof or source where you got the information, on OP. There is no one really knows about the optimum price in 2020 or at the end of 2021. I see that the price of Bitcoin can rise till $15,000 or $20,000. But whether it is in 2020 or 2021, who knows. I advise to focus in realistic prices only,. As I said that the possible price is about $15,000 or $20,000. It is reachable and not so far from the current price.