As of right now, the bitcoin price is expected to keep going up in the next 20 years. But can it last that long? I believe it's possible. But can't it crash at a random time? Like the price going down hard.
That question of yours is like asking who will become the president of the United States in few years to come after Trump. No one obviously will know the answer to your question but I am certain, a time will probably come when we will have a balance and the huge volatility may decrease as more people are already involved globally.