Do you think Bitcoin will remain the most dominant coin both short and long term? Even though it does not remain the most dominant coin, this will not be the same as saying that Bitcoin wont exist long term.
We cant predict an exact result in case of this but from my experience i think bitcoin will always be the mist dominant coin because there is no other coin have the power to maintain all issues that related to cryptosystem. But in case of bitcoin they can beat with their experience level in this field.