"Soon" would be in the next 1-3 years or so.
One of the biggest dangers for BTC is something more useful coming along and investors switching - a process which could happen extremely fast, once started.
So to all the tech savy people in here - what advantages could other cryptocurrencies bring that will give them a crucial edge over BTC, and how fast could something like that come along?
Current developments are very fast, so everything can happen, because everyone is racing to make money with technology. but I'm sure bitcoin will also be more advanced, because bitcoin is the first crypto currency.