It is amazing to see how people in the past perceived bitcoin. I am sure that most of us back in 2013 believed that bitcoin will never cross $7k within next 4 years either.
At this point in time, it is still impossible for us to pinpoint the moment when bitcoin will reach $50k - there are too many factors here that we don't know.
Extrapolating predictions based on breed bitcoin's price history can only carry us there.