It is too early to say highly speculative assets finally stabilizing. I think it will not happen in the short amount of time, but I believe in the future when everyone already boringly well-understood Bitcoin as a financial asset, the price will stabilize. Worth to mention is, Bitcoin has been completed the first stage movements in the late of 2017, so I'm sure a lot of interesting things will happen in the coming years.
Fixed amount of bitcoin, the total amount of fixed means that the natural deflation. With the speed of creation of human social wealth, there will be nothing faster than bitcoin appreciation. The total volume of Bitcoin and anarchy can indeed serve as an international settlement / credit base. So bitcoin is relatively stable.