It can really happen when bitcoin's price fail most of the investors are going to switch to ethereum because it has more stable price from the past months and it has faster tx confirmation that bitcoin.Most of the big players are manipulating the market using bitcoin's market,and that only means its popularity has gone to wild,for a common people who doesnt know how the market works they will just buy bitcoin not knowing they could lose a lot in an instant,that is why i prefer ethereum over bitcoin.