I should write something more elaborate about this, but this is my view: Bitcoin has become mainstream... it is fashionable. Early adopters are now moving from basic novelty to more thoughtful investments, that is "useful" cryptos, those that solve clear problems... and I Don't think there is a more obvious use for cryptos than that of Ripple: international bank transactions.
Other examples: DASH for everyday buying and selling, ETH for replacing stock markets, IOT for M2M transactions...