The possibilty of BTC to become a more succesful digital currency is huge. By that time majority of the Merchants, local and international businesses are accepting BTC, and the value will rise to the moon. If we notice the growth of its value this year was crazy, how much more in the upcoming years. Yet, there's always a slight possibilty that something better will replace BTC, Because there are numbers of teams who wants to catch up with BTC.