We certain are going to hit the $1 Trillion market cap, although we can't tell how soon we are getting there. Sometimes listening to experts and believing all what they keep saying can make one take the wrong choice. It's better to carefully follow things up and not go and borrow or sell valuables to buy bitcoin and when it doesn't hit target when expected so there will be no cause of concern.
There is no certainty about anything in crypto. No one can accurately predict the future prices of crypto and I am saying this from my own experience. I have been a member of this forum for the last 2-3 years, and from what I have seen more than 90% of the predictions from these experts failed. And make no mistake. A 400% increase in 6 years is not a "conservative" prediction. It is a bullish prediction, if we compare with the other assets.
. From zero to billion and the next target is trillion. 
