In my own personal opinion, bitcoin could really get back it's price up to 20k USD, but not for now it can't because bitcoin is still recovering it's price from it's downfall in the year of 2017. I think bitcoin could reach it's 20k USD price in the year of 2021 because bitcoin halving will happen in the starting year of 2020.
Almost all crypto users say that the price of bitcoin will reach $ 20000 by 2020, and they say that because of Good information support. although like that, we don't know exactly when the price of bitcoin can reach the price of $ 20000 by 2020, but many people analyze that the price of bitcoin will arrive at the price of $ 20000 in May 2020.
Due to volatile nature of bitcoin, no one is able to point out the exact day or month of 2020 when bitcoin will be going beyond 20k dollars but there is a range given by experts. Most of the people are speculating that bitcoin will reach this magnificent price in the first quarter of 2020. So in short bitcoin supporters do not have to wait so long now. We are already approaching the end of 2019.