Sometimes I wonder what these economists have in mind, As time passes we have more adoption and this adoption will not allow bitcoin to fall to zero as this guy is saying, no one would be dumb to be creating ETF's, Custody Services or invest a lot of money if they did not believe in the potential of bitcoin. He is giving his opinion very pessimistic, but it is only his opinion and should not be given too much importance
but its price depends on the balance of supply and demand.
That's why it will not fall to zero.