To determine whether one is emperor in the midst of others depends on what you are comparing against. I see no threat against the dominance of bitcoin in the market as at today because the period you were making reference to, it was the time the dominance was weaning down in the sense that, when the price of bitcoin was increasing so also was the price of others. However, the percentage of bitcoin in relation to the cumulation of others makes the "emperor" status dropped. Unlike now that price is down so also others but the percentage of bitcoin is not as much as the sum total which still makes the dominance solid as before. In the future, no one can predict exactly what will happen but when we get there, we will know what's next to do.