All the predictions in the article are hard to come true, it seems that they are too optimistic about the price of bitcoin in 2020. I have not seen any reason why Bitcoin can increase sharply in 2020.
I guess bitcoin will not be able to surpass $ 40k by 2020. The current cryptocurrency market is facing the opposition of many governments around the world, without the support of the government I think bitcoin will meet difficulties in 2020.
Predictions with large prices are difficult to prove from several sources stating bitcoin will soar to the highest level even they say $ 100,000 I'm not so sure what is said from some of these sources, obviously we better analyze ourselves in the near future because it will look bitcoin direction movement if short term. Do your best thinking while on the exchange.