Does it make sense to believe that Bitcoin could one day be replaced by another cryptocurrency, that is, a cryptocurrency that really does make Bitcoin obsolete?
We are not sure what will happen but I guess bitcoin is really hard to defeat. It already harbored to ordinary people's mind. Bitcoin is too popular so defeating it a challenger cryptocurrency would be a shot in the dark. But I also want to say that they don't have to compete with each other. Bitcoin and all other coins have their own strategies to acquire customers so just let the people decide to which they prefer, even both if decided.