It's unusual to find a positive outlook for Bitcoin in the mainstream financial media these days but Forbes has published some research by Tom Lee, Fundstrat Global Advisors
(link to article). The projection of $91,000 by March 2020 is based on what happened after each of the previous 'bubbles burst'.
They also recommend focusing on the main currencies as they see a shakeout of the 1,500 plus cryptos around at the moment.
This research has been posted by forbes,I can see at least two ways why Tom Lee made that happen:
1. He wants to gain attention so that people enter the bullish period now,and he is able to quickly profit right now.
2. He is trying to make an impression sort of thing,which again would give him revenue in the long run.
There are many more possible scenarios but it doesn't matter. There are so many of these rich investors predicting the price of bitcoin by so and so date,you can't honestly know what will happen. Go with the flow.