Good question ... I suspect eventually "regulation/s", one way or another. Given that it's the natural currency of the "dark web", and given the long-term desire of nations to keep control of their currency and money supply, there are eventually going to be a lot of what one might call "influential parties" wanting the bubble to burst, perhaps?
The banks will get together with the politicians, keep the brains and dump the body. Youtube-Madmax Beyond Thunderdome The Collector. This 2 minute video clip seems appropriate on so many levels . Enjoy !