this is just an opinion,

but with bitcoin reaches(or already reached its peak)due to its increasing in popularity and utilization, it shall stabilize (in such a way that it will lower the value 5-10 years from now) along the way.

an analogy to this is how a game balancing(stabilization) is applied to published games by the developers (the big guys on the market) to ease/or utilize some of the features/components(physical and non-physical factors) affected by sudden flux/variation.

while bitcoin is not in a grip of any individual, its volatility is depended on the players in the market.