I do hope too, even though my mind stated otherwise. but just to be sure, i think I have to keep at least 1 BTC until 2021. If he is right I will be a millionaire if not, well at least I still have 1 BTC.
Looking at the adoption rate, the price fluctuation and the acceptance.. it is near to impossilbe for Bitcoin to reach 1 million by 2020. Logical observation said bitcoin price at $50k is more possible.