Bitcoin is the oldest and most valuable cryptocurrency, but a crop of nimble competitors, including Ethereum and Bitcoin Cash, could lure investors away.
That would be a possibility. But I don't think that it will happen in the coming years. Even though bitcoin is the oldest crypto, it still enjoys large community supporters that are still very loyal to the development of the crypto. Also, despite the development of the crypto technology, Bitcoin still is a competitive crypto that could match any other top cryptos.