yes of course, if bitcoin is not profitable definitely demands against bitcoin will never go up. the fall of the bitcoin price is only part of the bitcoin fluctuation that will make it pump again and demands on the bitcoin will increase.
True, there will be no user and it will be not that popular if it's not profitable. And yes I agree that the fall of bitcoin price will make it pump again, because when the price becomes low a lot of investors and traders will buy more bitcoin resulting to the skyrocketing of the bitcoin price.
The increase of demand of bitcoin will dictates the current value of that coin, because of its low supply the value will increase by the numbers of users.