Woah, that seems to be a little too much for me. Bitcoin right now is at 2300 USD and he expects that the price will be 500,000 in 3 years. 3 years equals 156 weeks. If this was to be possible, bitcoin would have to rise at least 3000 USD a week, which is 350 a day. Seems pretty impossible in my opinion. I feel like he is really over valuing Bitcoin and this seems impossible. Maybe after Segwit, if the price goes up, then Bitcoin will have a chance of reaching 500,000 but right now, there is zero possibility of Bitcoin reaching that high in even 5 years. Maybe 10K in 3 years will be possible.