In this concept or ideology, its obvious that bitcoin is the father's of cryptocurrency or any other coins, other coins like ETH, litecoin and so many coins to be mention are under bitcoin, and its very clear that bitcoin gives other cryptocurrencies life for existence, so bitcoin will continue dominating any other coins also continue to be valuable than any other coins. Sub coins are alternative coins and they not be use to compare to the potential of bitcoin, and lack potentialities been alternative coins, and that makes so many of them to have shorter life.
Altcoins are just clones of bitcoin, in which they are just formed based on the ideal image of bitcoin. So whatever their goals, they do it following the path of bitcoin. This only means that bitcoin is always the king and the only coin that will dominate the crypto market. In cases where bitcoin fail and delays its price increase, I guess worst are still happening to altcoins as some did not recover their value and left as dead coins.