I think it is possible by 2020 because many countries will accept bitcoin as another payment method for purchasing lot of things. By 2020 Bitcoin is going to build large community where it can have more value.
That's way too late. $10k is possible by next year. Some so called experts are even predicting $20k by next year's end. That's awfully optimistic in my opinion.
You were right about 2020 being way too late. However you were not bullish enough predicting 20k by next year's end... What do you think about it hitting 20k by this year's end now?