"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?
Bitcoin can be replaced but not soon because still any new or experienced investor or a trader consider Bitcoin as the main currency above all in the cryptocurrency market and I think that is because of the demand that the outside world has given towards Bitcoin and also it's popularity among many so Bitcoin can continue its position in the market for a long time but one day there will be a great currency better than Bitcoin will rise and it is not a surprise because in the technical world those things happen often