If there is no demand then the price will go to 0$ but as mentioned above, that's unrealistic and impossible to happen.
I agree with you, bitcoin is a strong and big name in crypto currency world and first comes up in mind when we say crypto currency.
The demand of the bitcoin has remained an issue for almost all the people who have ever invested in the bitcoin in many ways, there was a time when the demand was very high with very minute supply and now the demand is not that high comparatively.
One thing is guaranteed that the demand of the bitcoin will never vanish and the credit goes to the management team because whenever there is some issue in the bitcoin, it is not only solved immediately but also other remedies are also done with that.