Why do you think like that,bitcoin made huge price bump since lat year at it now more number of investors that's why the bitcoin is still the expensive crypto.But now the price correction occuring on bitcoin which is healty for it and it allows new investors to come in.
Ripple is just a hype coin and it is not a good option to invest there are many altcoins available to invest than ripple for example NEM have grat future and price also will bump soon.The price of ethereum is bumping because of ethereum hardfork will happening on january 19 so people might want free coins so they are investing more on ethereum than bitcoins.