the present value should already contain all discounted future value, which is anticipated by market participants. although one could make an argument that market participants are growing temporarily driving up the price.
so then we may have what is called a liquidity trap in the bitcoin world. which would result in deflation (higher btc price)that we are now seeing but it is not a long term innovation value driven bubble by a change in the rate of adoption and rate of tx growth.
IF that is the case, then as soon as the speculators run out of powder and whatever other reasons others may have for hoarding the crash will come , unless tx rates increase dramatically. it could happen, i just don't see it right now.
this is not to say that the price cannot go up, it may for some time, until people realize that there is no additional value from just buying the stuff and not doing anything with it.
Bitcoin does have utility, and it is filling a serious gap in a world that is looking for alternative ways to store wealth in an increasingly unstable financial world. I live in a city that is currently experiencing a condo boom/bubble that is largely the result of asian money looking for a way to hedge their holdings. Bitcoin is starting filling this niche. In the future, Bitcoin's utility as a transactional medium will be realized with increased market penetration and a mature ecosystem of services.