btc still have intrinsic value as it is traded for chinese expating money, scared Venezuelans, American weekend drug users, etc.
etherium exists for the sole purpose of playing investing with btc. everyone I know who owns etherium bought after they decided to buy btc and got a price hike on their investment so they flip btc and etherium instead of btc and usd. because they see it as two things that ever goes up. ha.
this is the most perfect scenario for a pump and dump. intentional or not.