The early trends suggests otherwise. The recent spike (which resulted from the speech made by Xi Jinping, in which he mentioned about the Blockchain technology) took Bitcoin dominance form 66.5% to 68.0%. That is a 1.5% increase in just 24 hours. Even established altcoins such as Ethereum have witnessed their market share going down over the past few months. And with the Bitcoin block reward halving approaching, it is going to get even worse for the altcoins (including the top-10 coins such as Litecoin and Ripple).