I think that bitcoin will still survive and thrive for a long time. It will stand the test of time. It is proved by the history. Because history only repeats itself right? Even if many other coins created, bitcoin will thrive among them all. Unless, there is a time where an ultimate coin existed. Wherein, all the functionalities and no disadvantages that it can bring. But, that seems improbable right?
Bitcoin is defined as a way to make a profit. Keeping away from the acoin currency is a good way to survive longer in the Bitcoin world.