I don't think so....bitcoin is here to stay...
thats true, bitcoin was created as a perfect currency and it just cannot be simply replaced by something else because it is too strong
Bitcoin is definitely not perfect, however it is far more polished and has a larger community, and it has not been challenged by anything that could grow as big as it has and be as polished as Bitcoin is without a ton of mediocre gimmicks to try and make it better without actually offering anything.