One of the main reasons that can fuel Bitcoin prices is the reduction in transaction volume. If people still believe that Bitcoin is a store value and continue to purchase it, then transactions will reduce in time. As more people use Bitcoin, it gradually becomes less available for people to do the transaction with it. On the other hand, if trends change such that people use it more and more often, Bitcoin becomes scarce, hence the value can increase due to an increase in scarcity. So, there is a possibility that bitcoin can reach $100k at some point if the factors highlighted above favor the price increase and market valuation.