This is my veiw of BTC price movement if we start seeing adoption by the end of 2018. The green lines show short and long term average movements. Near the end of the curve, market cap above 3 trillion USD will minimize volatility and BTC/USD will stabilize. This would mean single BTC price of about $200k around year 2020 and 1 satoshi would be worth 0.2 cents, although USD inflation could push these figures higher :)